Fragment 底部菜单栏
实例讲解一
实例效果图：
点击wifi“按钮”显示的界面：
项目结构
具体代码编写
1、左边页面布局界面，frag_list.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="无线和网络"
android:textSize="30sp" /> <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:orientation="horizontal" > <TextView
android:id="@+id/wifi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="WI-Fi"
android:textSize="30sp" /> <ToggleButton
android:id="@+id/toggleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="20dp"
android:text="开" />
</LinearLayout> <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设备"
android:textSize="30sp" /> <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> <TextView
android:id="@+id/saveBut"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="存储"
android:textSize="35sp" /> </LinearLayout>
2、右边页面布局界面，frag_detail.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/right"
android:orientation="vertical" > <RelativeLayout
android:id="@+id/save"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="10dp"
android:visibility="gone" > <include layout="@layout/save" />
</RelativeLayout> <RelativeLayout
android:id="@+id/wifi"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_margin="10dp"
android:visibility="gone" > <include layout="@layout/wifi" />
</RelativeLayout> </LinearLayout>
3、主布局界面，main.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
tools:context=".AndroidFragmentActivity" > <!-- 主頁面 -->
<!-- 左边页面 --> <fragment
android:id="@+id/frag_list"
android:name="co.cm.fragement.FragementList"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="" /> <!-- 右面页面 --> <fragment
android:id="@+id/frag_detail"
android:name="co.cm.fragement.FragementDetails"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="" /> </LinearLayout>
4、list_item.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/left"
android:orientation="horizontal" > <ImageView
android:id="@+id/img"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /> <TextView
android:id="@+id/txt_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" /> </LinearLayout>
5、save.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="内部存储空间"
android:textSize="30sp" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:text="1GB/1.98GB"
android:textSize="20sp" /> <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="总容量"
android:textSize="30sp" /> <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="20dp"
android:layout_marginTop="5dp"
android:text="1.98GB"
android:textSize="20sp" /> <TextView
android:layout_width="match_parent"
android:layout_height="1px"
android:background="@color/lineColor" /> </LinearLayout>
6、wifi_list：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <TextView
android:id="@+id/wifi_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="qinjin_tp_2" /> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="信号强度 :" /> <TextView
android:id="@+id/wifi_name_state"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="还没有连接" />
</LinearLayout> </LinearLayout>
7、wifi.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <LinearLayout
android:id="@+id/wifiLinear"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="MAC地址 :"
android:textSize="@dimen/textsize" /> <TextView
android:id="@+id/mac_address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="MAC地址 "
android:textSize="@dimen/textsize" />
</LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="接入点的BSSID :"
android:textSize="@dimen/textsize" /> <TextView
android:id="@+id/bssid"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="接入点的BSSID "
android:textSize="@dimen/textsize" />
</LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IP地址: "
android:textSize="@dimen/textsize" /> <TextView
android:id="@+id/ip_address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IP地址 "
android:textSize="@dimen/textsize" />
</LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="id "
android:textSize="@dimen/textsize" /> <TextView
android:id="@+id/id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="id "
android:textSize="@dimen/textsize" />
</LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" > <TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" WifiInfo的所有信息包 "
android:textSize="@dimen/textsize" /> <TextView
android:id="@+id/info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="WifiInfo的所有信息包 "
android:textSize="@dimen/textsize" />
</LinearLayout> <ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="2dp" >
</ListView>
</LinearLayout> <TextView
android:id="@+id/wifiText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="要查看可用的网络，请打开wifi"
android:textSize="@dimen/textsize" /> </RelativeLayout>
8、主界面类，AndroidFragmentActivity.java：
package co.cm.fragement; import co.cm.fragement.R;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle; public class AndroidFragmentActivity extends Activity {
// 主activity
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WifiAdmin.getWifiAdmin().setmContext(AndroidFragmentActivity.this);
WifiAdmin.getWifiAdmin().getWifiMeathod();
}
}
9、左面fragment界面类，FragmentList.java：
package co.cm.fragement; import co.cm.fragement.R; import android.app.Fragment;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.ToggleButton; /**
* @author yuyang
* 功能描述：左面fragment界面类，该类提供了选项操作
*/
public class FragementList extends Fragment {
//点击切换到wifi存储界面
private TextView wifi; //点击切换到save存储界面
private TextView saveBut; //定义右面fragment实例
private FragementDetails frag_detail; //打开关闭wifi按钮
private ToggleButton toggleButton; //toggleButton按钮是否被点击
private boolean isChecked = false; //监听button状态线程标志位
private boolean butIsRunning = false; @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
// 在这里初始化fragment的页面
return inflater.inflate(R.layout.frag_list, container, false);
} @Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// 由于fragment不是activity，不是oncreated，而是onActivityCreated
setView();
setListener(); startThread();// 启动控制button的线程，当wifi状态不是在1或者3的时候，不可点击，
// if (frag != null && frag.isInLayout()) {
// switch (arg2) {
// case 0:
// frag.setText("0000");
} /**
* 给按钮设置监听
*/
public void setListener() {
saveBut.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
frag_detail.setSaveShow();
}
}); wifi.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
frag_detail.setWifiShow();
Log.i("", WifiAdmin.getWifiAdmin().checkState() + "===-=-");
checktoggleButton();// 当点回到wifi界面时，刷新button的状态
}
}); toggleButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.i("", isChecked + "/" + WifiAdmin.getWifiAdmin().checkState());
if (isChecked) {
WifiAdmin.getWifiAdmin().OpenWifi();
frag_detail.setWifiShow();
// toggleButton.setText("关闭");
toggleButton.setChecked(false);
isChecked = false;
} else {
WifiAdmin.getWifiAdmin().CloseWife();
frag_detail.setWifiShow();
// toggleButton.setText("打开");
toggleButton.setChecked(true);
isChecked = true;
}
toggleButton.setClickable(false);
}
});
} //
public void checktoggleButton() {
if (WifiAdmin.getWifiAdmin().checkState() == ) {
toggleButton.setChecked(true);
isChecked = true;
}
if (WifiAdmin.getWifiAdmin().checkState() == ) {
toggleButton.setChecked(false);
isChecked = false;
}
} public void setView() {
wifi = (TextView) getView().findViewById(R.id.wifi);
toggleButton = (ToggleButton) getView().findViewById(R.id.toggleButton);
saveBut = (TextView) getView().findViewById(R.id.saveBut); // 实例化右面界面，以便操纵里面的方法F
frag_detail = (FragementDetails) getFragmentManager().findFragmentById(R.id.frag_detail); // 初始化button的装态
if (WifiAdmin.getWifiAdmin().checkState() == ) {
toggleButton.setChecked(false);
isChecked = false;
}
if (WifiAdmin.getWifiAdmin().checkState() == ) {
toggleButton.setChecked(true);
isChecked = true;
}
toggleButton.setClickable(true);
} @Override
public void onDestroy() {
frag_detail.stopWifiThread();
butIsRunning = false;
super.onDestroy();
} private void startThread() {
butIsRunning = true;
new Thread(new Runnable() { @Override
public void run() {
while (butIsRunning) {
//只有wifi状态改变变化完毕之后才能允许点击按钮
if (WifiAdmin.getWifiAdmin().checkState() == ) {
if (!isChecked) {
toggleButton.setClickable(true);
} } else if (WifiAdmin.getWifiAdmin().checkState() == ) {
if (isChecked) {
toggleButton.setClickable(true);
}
}
}
}
}).start();
} }
10、右面fragment界面类
package co.cm.fragement; import java.util.ArrayList;
import java.util.List;
import co.cm.fragement.R;
import android.app.Fragment;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView; /**
* @author yangyu
* 功能描述：右面fragment界面类，该类实现了右面显示的操作
*/
public class FragementDetails extends Fragment {
private TextView mac_address, bssid, ip_address, id, info, wifiText; private ListView listView; private LinearLayout wifiLinear; private RelativeLayout save, wifi; private boolean ThreadFlag = false; //wifi数据适配器
private WifiAdapter wifiAdapter; // 扫描出的网络连接列表
private List<ScanResult> mWifiList = new ArrayList<ScanResult>(); // 网络连接列表
private List<WifiConfiguration> mWifiConfiguration = null; private int nowWifiState = ; @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
return inflater.inflate(R.layout.frag_detail, container, false);
} @Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setView();
// setListener();
setWifiShow(); } /**
* 显示wifi界面
*/
public void setWifiShow() {
//通过隐藏显示来达到不同页面内容的切换
save.setVisibility(View.GONE);
wifi.setVisibility(View.VISIBLE);
stopWifiThread();
refreshWifi(); } /**
* 显示保存界面
*/
public void setSaveShow() {
stopWifiThread();
save.setVisibility(View.VISIBLE);
wifi.setVisibility(View.GONE);
} /**
* 初始化组件
*/
public void setView() {
// -----------------wifi-----------------
wifiText = (TextView) getView().findViewById(R.id.wifiText);
mac_address = (TextView) getView().findViewById(R.id.mac_address);
bssid = (TextView) getView().findViewById(R.id.bssid);
ip_address = (TextView) getView().findViewById(R.id.ip_address);
id = (TextView) getView().findViewById(R.id.id);
info = (TextView) getView().findViewById(R.id.info);
listView = (ListView) getView().findViewById(R.id.listview);
wifiLinear = (LinearLayout) getView().findViewById(R.id.wifiLinear);
save = (RelativeLayout) getView().findViewById(R.id.save);
wifi = (RelativeLayout) getView().findViewById(R.id.wifi);
wifiAdapter = new WifiAdapter();
listView.setAdapter(wifiAdapter);
} private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
nowWifiState = WifiAdmin.getWifiAdmin().checkState();
// 当wifi打开时，刷新wifi列表的内容
if (nowWifiState == ) {
mWifiList = WifiAdmin.getWifiAdmin().GetWifiList();
// 如果刚开始检测的wifi列表为空，则创建一个实例化的wifi而不是null，负责会在adpter里面报错
if (mWifiList != null) {
// 如果wifi列表发生改变，则更新，else不更新
if (!mWifiList.toString().equals(
WifiAdmin.getWifiAdmin().getLastWifiList().toString())) {
WifiAdmin.getWifiAdmin().setLastWifiList(mWifiList);
wifiAdapter.notifyDate();
}
} else {
mWifiList = new ArrayList<ScanResult>();
}
}
refreshMeathod(); super.handleMessage(msg);
}
}; /**
* 刷新wifi的状态
*/
public void refreshWifi() {
new Thread(new Runnable() {
@Override
public void run() {
ThreadFlag = true;
while (ThreadFlag) {
// Log.i("111", WifiAdmin.getWifiAdmin().checkState() +
// "!!!");
Message msg = handler.obtainMessage();
handler.sendMessage(msg);
try {
Thread.sleep();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();
} public void refreshMeathod() {
// 此处可用switch
if (nowWifiState == ) {
wifiLinear.setVisibility(View.VISIBLE);
wifiText.setVisibility(View.INVISIBLE);
mac_address.setText(WifiAdmin.getWifiAdmin().GetMacAddress() + "");
bssid.setText(WifiAdmin.getWifiAdmin().GetBSSID() + "");
ip_address.setText(WifiAdmin.getWifiAdmin().GetIPAddress() + "");
id.setText(WifiAdmin.getWifiAdmin().GetNetworkId() + "");
info.setText(WifiAdmin.getWifiAdmin().GetWifiInfo() + "");
} else if (nowWifiState == ) {
wifiText.setVisibility(View.VISIBLE);
wifiLinear.setVisibility(View.INVISIBLE);
wifiText.setText("要查看可用的网络，请打开wifi");
} else if (nowWifiState == ) {
wifiText.setVisibility(View.VISIBLE);
wifiLinear.setVisibility(View.INVISIBLE);
wifiText.setText("wifi正在打开");
} else if (nowWifiState == ) {
wifiText.setVisibility(View.VISIBLE);
wifiLinear.setVisibility(View.INVISIBLE);
wifiText.setText("wifi正在关闭");
} else {
wifiText.setVisibility(View.VISIBLE);
wifiLinear.setVisibility(View.INVISIBLE);
wifiText.setText("我不知道wifi正在做什么");
}
} public void stopWifiThread() {
ThreadFlag = false;
} public class WifiAdapter extends BaseAdapter {
@Override
public int getCount() {
return mWifiList.size();
} @Override
public Object getItem(int position) {
return mWifiList.get(position);
} @Override
public long getItemId(int position) {
return position;
} @Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = convertView; final ChatViewHolder vh; if (convertView == null) {
vh = new ChatViewHolder();
view = View.inflate(WifiAdmin.getWifiAdmin().getmContext(),
R.layout.wifi_list, null);
vh.wifi_name = (TextView) view.findViewById(R.id.wifi_name); vh.wifi_name_state = (TextView) view
.findViewById(R.id.wifi_name_state); view.setTag(vh);
} else {
vh = (ChatViewHolder) view.getTag();
}
vh.wifi_name.setText(mWifiList.get(position).SSID.toString());// 网络的名字，唯一区别WIFI网络的名字
vh.wifi_name_state.setText(mWifiList.get(position).level + "");
return view;
} public void notifyDate() {
notifyDataSetChanged();
} } public class ChatViewHolder {
TextView wifi_name;// 网络的名字，唯一区别WIFI网络的名字
TextView wifi_name_state;// 所发现的WIFI网络信号强度
} }
11、wifiAdmin类，提供了wifi操作的方法，WifiAdmin.java：
package co.cm.fragement; import java.util.ArrayList;
import java.util.List; import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log; /**
* @author yangyu
* wifiAdmin提供了wifi操作的方法
*/
public class WifiAdmin {
private static WifiAdmin wifiAdmin; private WifiManager mWifiManager = null; private WifiInfo mWifiInfo = null; // 扫描出的网络连接列表
private List<ScanResult> mWifiList = new ArrayList<ScanResult>(); // 扫描出的网络连接列表
private List<ScanResult> lastWifiList = new ArrayList<ScanResult>(); // 网络连接列表
private List<WifiConfiguration> mWifiConfiguration = null; private WifiLock mWifiLock = null; // 上次网络状态
private int lastWifiState = ; //定义上下文Context
Context mContext; public List<ScanResult> getLastWifiList() {
return lastWifiList;
} public void setLastWifiList(List<ScanResult> lastWifiList) {
this.lastWifiList = lastWifiList;
} public int getLastWifiState() {
return lastWifiState;
} public void setLastWifiState(int lastWifiState) {
this.lastWifiState = lastWifiState;
} public static WifiAdmin getWifi() {
return wifiAdmin;
} public Context getmContext() {
return mContext;
} public void setmContext(Context mContext) {
this.mContext = mContext;
} public static WifiAdmin getWifiAdmin() {
if (wifiAdmin == null) {
wifiAdmin = new WifiAdmin(); }
return wifiAdmin;
} public void getWifiMeathod() {
mWifiManager = (WifiManager) mContext
.getSystemService(mContext.WIFI_SERVICE);
mWifiInfo = mWifiManager.getConnectionInfo();
} /**
* 打开wifi
*/
public void OpenWifi() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
} else {
Log.i("", "open 失败");
}
} /**
* 关闭wifi
*/
public void CloseWife() {
if (mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
} else {
Log.i("", "close 失败");
}
} /**
* 锁定wifi
*/
public void lockWifi() {
mWifiLock.acquire();
} public void rlockWifi() {
if (mWifiLock.isHeld()) {
mWifiLock.acquire();
}
} // 检查当前wifi状态WIFI网卡的状态是由一系列的整形常量来表示的。
//1.WIFI_STATE_DISABLED : WIFI网卡不可用（1）
//2.WIFI_STATE_DISABLING : WIFI网卡正在关闭（0）
//3.WIFI_STATE_ENABLED : WIFI网卡可用（3）
//4.WIFI_STATE_ENABLING : WIFI网正在打开（2） （WIFI启动需要一段时间）
//5.WIFI_STATE_UNKNOWN : 未知网卡状态
public int checkState() {
return mWifiManager.getWifiState();
} /**
* 创建一个wifilock
*/
public void Createwifilock() {
mWifiLock = mWifiManager.createWifiLock("Testss");
} /**
* 得到配置好的网络
* @return
*/
public List<WifiConfiguration> GetConfinguration() {
return mWifiConfiguration;
} /**
* 连接配置好的指定ID的网络
* @param index
*/
public void ConnectConfiguration(int index) {
if (index > mWifiConfiguration.size()) {
return;
}
mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId,true);
} /**
* 开始扫描网络
*/
public void StartScan() {
mWifiManager.startScan();
// 得到扫描结果
mWifiList = mWifiManager.getScanResults();
// 得到配置好的网络连接
mWifiConfiguration = mWifiManager.getConfiguredNetworks();
} /**
* 得到网络列表
* @return
*/
public List<ScanResult> GetWifiList() {
mWifiManager.startScan();
// 得到扫描结果
mWifiList = mWifiManager.getScanResults();
return mWifiList;
} public List<WifiConfiguration> getmWifiConfiguration() {
return mWifiConfiguration;
} /**
* 查看扫描结果
*/
public StringBuilder LookUpScan() {
StringBuilder stringBuilder = new StringBuilder();
for (int i = ; i < mWifiList.size(); i++) {
stringBuilder.append("Index_" + new Integer(i + ).toString() + ":");
// 将ScanResult信息转换成一个字符串包
// 其中把包括：BSSID、SSID、capabilities、frequency、level
stringBuilder.append((mWifiList.get(i)).toString());
stringBuilder.append("\n");
}
return stringBuilder;
} /**
* 得到MAC地址
*/
public String GetMacAddress() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress();
} /**
* 得到接入点的BSSID
*/
public String GetBSSID() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID();
} /**
* 得到IP地址
*/
public int GetIPAddress() {
return (mWifiInfo == null) ? : mWifiInfo.getIpAddress();
} /**
* 得到连接的ID
*/
public int GetNetworkId() {
return (mWifiInfo == null) ? : mWifiInfo.getNetworkId();
} /**
* 得到WifiInfo的所有信息包
*/
public String GetWifiInfo() {
return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString();
} /**
* 添加一个网络并连接
*/
public void AddNetwork(WifiConfiguration wcg) {
int wcgID = mWifiManager.addNetwork(wcg);
mWifiManager.enableNetwork(wcgID, true);
} /**
* 断开指定ID的网络
*/
public void DisconnectWifi(int netId) {
mWifiManager.disableNetwork(netId);
mWifiManager.disconnect();
}
}
小结： 当我们需要在一个界面中处理很多事情的时候，可以推荐使用fragment，因为他会把我们的activity分割成很多小块，每个小块都有他的生命周期，非常方便，而有时我们会用单例模式来存储每个页面都有的东西。
实例讲解二
项目的效果图
项目结构目录
代码具体编写
1、标题栏的布局界面，title_view.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dip"
android:background="@drawable/title_bg"
android:orientation="horizontal" > <Button
android:id="@+id/left_btn"
style="@style/Text.Title_Button"
android:layout_width="wrap_content"
android:layout_height="35dip"
android:layout_gravity="center_vertical"
android:background="@drawable/title_btn_back"
android:minWidth="60dip" /> <TextView
android:id="@+id/title_text"
style="@style/Text.Title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="" /> <Button
android:id="@+id/right_btn"
style="@style/Text.Title_Button"
android:layout_width="wrap_content"
android:layout_height="35dip"
android:layout_gravity="center_vertical"
android:background="@drawable/title_btn"
android:minWidth="70dip" /> </LinearLayout>
2、首页的fragment页面，这里就列出一个，fragment_home.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" > <com.eoe.tampletfragment.view.TitleView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content" /> <TextView
android:id="@+id/fragment_home_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/fragment_home_text"
android:textSize="18sp" /> </LinearLayout>
3、帮助Activity界面，activity_help.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/activity_bg"
android:orientation="vertical" > <com.eoe.tampletfragment.view.TitleView
android:id="@+id/title"
android:layout_width="fill_parent"
android:layout_height="wrap_content" /> </LinearLayout>
4、主页面布局，activity_main.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/activity_bg"
android:orientation="vertical" > <fragment
android:id="@+id/fragment_home"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight=""
class="com.eoe.tampletfragment.fragment.HomeFragment" /> <fragment
android:id="@+id/fragment_search"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight=""
class="com.eoe.tampletfragment.fragment.SearchFragment" /> <fragment
android:id="@+id/fragment_settings"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight=""
class="com.eoe.tampletfragment.fragment.SettingsFragment" /> <com.eoe.tampletfragment.fragment.FragmentIndicator
android:id="@+id/indicator"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/tab_footer_bg" /> </LinearLayout>
详细说明： <1> 主页面MainActivity继承自FragmentActivity类，负责实现导航按钮所对应页面的显示和隐藏。
（详细实现见源码）
<2> 主页面由底部导航栏和面板组成。 <3> fragment标签所对应Fragment的实现类。
<4> com.eoe.tampletfragment.fragment.FragmentIndicator标签所对应的是底部导航栏。
5、自定义顶部工具栏，TitleView.java：
package com.eoe.tampletfragment.view; import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.TextView; import com.eoe.tampletfragment.R; /**
* @author yangyu
* 功能描述：自定义顶部工具栏
*/
public class TitleView extends FrameLayout implements View.OnClickListener { private Button mLeftBtn;
private Button mRightBtn;
private TextView mTitle; private OnLeftButtonClickListener mOnLeftButtonClickListener;
private OnRightButtonClickListener mOnRightButtonClickListener; public interface OnLeftButtonClickListener {
public void onClick(View button);
} public interface OnRightButtonClickListener {
public void onClick(View button);
} public void setLeftButton(String text, OnLeftButtonClickListener listener) {
mLeftBtn.setText(text);
mLeftBtn.setVisibility(View.VISIBLE);
mOnLeftButtonClickListener = listener;
} public void setLeftButton(int stringID, OnLeftButtonClickListener listener) {
mLeftBtn.setText(stringID);
mLeftBtn.setVisibility(View.VISIBLE);
mOnLeftButtonClickListener = listener;
} public void removeLeftButton() {
mLeftBtn.setText("");
mLeftBtn.setVisibility(View.INVISIBLE);
mOnLeftButtonClickListener = null;
} public void hiddenLeftButton() {
mLeftBtn.setVisibility(View.INVISIBLE);
} public void showLeftButton() {
mLeftBtn.setVisibility(View.VISIBLE);
} public void setRightButton(String text, OnRightButtonClickListener listener) {
mRightBtn.setText(text);
mRightBtn.setVisibility(View.VISIBLE);
mOnRightButtonClickListener = listener;
} public void setRightButton(int stringID, OnRightButtonClickListener listener) {
mRightBtn.setText(stringID);
mRightBtn.setVisibility(View.VISIBLE);
mOnRightButtonClickListener = listener;
} public void removeRightButton() {
mRightBtn.setText("");
mRightBtn.setVisibility(View.INVISIBLE);
mOnRightButtonClickListener = null;
} public void hiddenRightButton() {
mRightBtn.setVisibility(View.INVISIBLE);
} public void showRightButton() {
mRightBtn.setVisibility(View.VISIBLE);
} public TitleView(Context context) {
this(context, null);
} public TitleView(Context context, AttributeSet attrs) {
this(context, attrs, );
} public TitleView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle); LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.title_view, this, true); mLeftBtn = (Button) findViewById(R.id.left_btn);
mLeftBtn.setVisibility(View.INVISIBLE);
mLeftBtn.setOnClickListener(this);
mRightBtn = (Button) findViewById(R.id.right_btn);
mRightBtn.setVisibility(View.INVISIBLE);
mRightBtn.setOnClickListener(this); mTitle = (TextView) findViewById(R.id.title_text);
mTitle.setVisibility(View.INVISIBLE);
} public void setTitle(String text) {
mTitle.setVisibility(View.VISIBLE);
mTitle.setText(text);
} public void setTitle(int stringID) {
mTitle.setVisibility(View.VISIBLE);
mTitle.setText(stringID);
} @Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.left_btn:
if(mOnLeftButtonClickListener != null)
mOnLeftButtonClickListener.onClick(v);
break;
case R.id.right_btn:
if(mOnRightButtonClickListener != null)
mOnRightButtonClickListener.onClick(v);
break;
}
} }
6、自定义底部工具栏，FragmentIndicator.java：
package com.eoe.tampletfragment.fragment; import android.content.Context;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView; import com.eoe.tampletfragment.R; /**
* @author yangyu
* 功能描述：自定义底部工具栏
*/
public class FragmentIndicator extends LinearLayout implements OnClickListener { private int mDefaultIndicator = ; private static int mCurIndicator; private static View[] mIndicators; private OnIndicateListener mOnIndicateListener; private static final String TAG_ICON_0 = "icon_tag_0";
private static final String TAG_ICON_1 = "icon_tag_1";
private static final String TAG_ICON_2 = "icon_tag_2"; private static final String TAG_TEXT_0 = "text_tag_0";
private static final String TAG_TEXT_1 = "text_tag_1";
private static final String TAG_TEXT_2 = "text_tag_2"; private static final int COLOR_UNSELECT = Color.argb(, 0xff, 0xff, 0xff);
private static final int COLOR_SELECT = Color.WHITE; private FragmentIndicator(Context context) {
super(context);
} public FragmentIndicator(Context context, AttributeSet attrs) {
super(context, attrs); mCurIndicator = mDefaultIndicator;
setOrientation(LinearLayout.HORIZONTAL);
init();
} private View createIndicator(int iconResID, int stringResID, int stringColor,
String iconTag, String textTag) {
LinearLayout view = new LinearLayout(getContext());
view.setOrientation(LinearLayout.VERTICAL);
view.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, ));
view.setGravity(Gravity.CENTER_HORIZONTAL); ImageView iconView = new ImageView(getContext());
iconView.setTag(iconTag);
iconView.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, ));
iconView.setImageResource(iconResID); TextView textView = new TextView(getContext());
textView.setTag(textTag);
textView.setLayoutParams(new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, ));
textView.setTextColor(stringColor);
textView.setTextSize(TypedValue.COMPLEX_UNIT_SP, );
textView.setText(stringResID); view.addView(iconView);
view.addView(textView); return view; } private void init() {
mIndicators = new View[];
mIndicators[] = createIndicator(R.drawable.ic_home_focused,
R.string.tab_home, COLOR_SELECT, TAG_ICON_0, TAG_TEXT_0);
mIndicators[].setBackgroundResource(R.drawable.indic_select);
mIndicators[].setTag(Integer.valueOf());
mIndicators[].setOnClickListener(this);
addView(mIndicators[]);
mIndicators[] = createIndicator(R.drawable.ic_search_normal,
R.string.tab_search, COLOR_UNSELECT, TAG_ICON_1, TAG_TEXT_1);
mIndicators[].setBackgroundColor(Color.alpha());
mIndicators[].setTag(Integer.valueOf());
mIndicators[].setOnClickListener(this);
addView(mIndicators[]);
mIndicators[] = createIndicator(R.drawable.ic_settings_normal,
R.string.tab_settings, COLOR_UNSELECT, TAG_ICON_2, TAG_TEXT_2);
mIndicators[].setBackgroundColor(Color.alpha());
mIndicators[].setTag(Integer.valueOf());
mIndicators[].setOnClickListener(this);
addView(mIndicators[]);
} public static void setIndicator(int which) {
// clear previous status.
mIndicators[mCurIndicator].setBackgroundColor(Color.alpha());
ImageView prevIcon;
TextView prevText;
switch(mCurIndicator) {
case :
prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_0);
prevIcon.setImageResource(R.drawable.ic_home_normal);
prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_0);
prevText.setTextColor(COLOR_UNSELECT);
break;
case :
prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_1);
prevIcon.setImageResource(R.drawable.ic_search_normal);
prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_1);
prevText.setTextColor(COLOR_UNSELECT);
break;
case :
prevIcon =(ImageView) mIndicators[mCurIndicator].findViewWithTag(TAG_ICON_2);
prevIcon.setImageResource(R.drawable.ic_settings_normal);
prevText = (TextView) mIndicators[mCurIndicator].findViewWithTag(TAG_TEXT_2);
prevText.setTextColor(COLOR_UNSELECT);
break;
} // update current status.
mIndicators[which].setBackgroundResource(R.drawable.indic_select);
ImageView currIcon;
TextView currText;
switch(which) {
case :
currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_0);
currIcon.setImageResource(R.drawable.ic_home_focused);
currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_0);
currText.setTextColor(COLOR_SELECT);
break;
case :
currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_1);
currIcon.setImageResource(R.drawable.ic_search_focused);
currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_1);
currText.setTextColor(COLOR_SELECT);
break;
case :
currIcon =(ImageView) mIndicators[which].findViewWithTag(TAG_ICON_2);
currIcon.setImageResource(R.drawable.ic_settings_focused);
currText = (TextView) mIndicators[which].findViewWithTag(TAG_TEXT_2);
currText.setTextColor(COLOR_SELECT);
break;
} mCurIndicator = which;
} public interface OnIndicateListener {
public void onIndicate(View v, int which);
} public void setOnIndicateListener(OnIndicateListener listener) {
mOnIndicateListener = listener;
} @Override
public void onClick(View v) {
if (mOnIndicateListener != null) {
int tag = (Integer) v.getTag();
switch (tag) {
case :
if (mCurIndicator != ) {
mOnIndicateListener.onIndicate(v, );
setIndicator();
}
break;
case :
if (mCurIndicator != ) {
mOnIndicateListener.onIndicate(v, );
setIndicator();
}
break;
case :
if (mCurIndicator != ) {
mOnIndicateListener.onIndicate(v, );
setIndicator();
}
break;
default:
break;
}
}
}
}
7、首页fragment页面，HomeFragment.java：
package com.eoe.tampletfragment.fragment; import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView; import com.eoe.tampletfragment.HelpActivity;
import com.eoe.tampletfragment.R;
import com.eoe.tampletfragment.view.TitleView;
import com.eoe.tampletfragment.view.TitleView.OnLeftButtonClickListener;
import com.eoe.tampletfragment.view.TitleView.OnRightButtonClickListener; /**
* @author yangyu
* 功能描述：首页fragment页面
*/
public class HomeFragment extends Fragment { private View mParent; private FragmentActivity mActivity; private TitleView mTitle; private TextView mText; /**
* Create a new instance of DetailsFragment, initialized to show the text at
* 'index'.
*/
public static HomeFragment newInstance(int index) {
HomeFragment f = new HomeFragment(); // Supply index input as an argument.
Bundle args = new Bundle();
args.putInt("index", index);
f.setArguments(args); return f;
} public int getShownIndex() {
return getArguments().getInt("index", );
} @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
return view;
} @Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mActivity = getActivity();
mParent = getView(); mTitle = (TitleView) mParent.findViewById(R.id.title);
mTitle.setTitle(R.string.title_home);
mTitle.setLeftButton(R.string.exit, new OnLeftButtonClickListener(){ @Override
public void onClick(View button) {
mActivity.finish();
} });
mTitle.setRightButton(R.string.help, new OnRightButtonClickListener() { @Override
public void onClick(View button) {
goHelpActivity();
}
}); mText = (TextView) mParent.findViewById(R.id.fragment_home_text); } private void goHelpActivity() {
Intent intent = new Intent(mActivity, HelpActivity.class);
startActivity(intent);
} @Override
public void onHiddenChanged(boolean hidden) {
super.onHiddenChanged(hidden);
} @Override
public void onDestroy() {
super.onDestroy();
} }
8、Activity帮助界面，HelpActivity.java：
package com.eoe.tampletfragment; import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Window; /**
* @author yangyu
* 功能描述：帮助Activity界面
*/
public class HelpActivity extends FragmentActivity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_help);
} }
9、Activity主界面，MainActivity.java：
package com.eoe.tampletfragment; import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.Window; import com.eoe.tampletfragment.fragment.FragmentIndicator;
import com.eoe.tampletfragment.fragment.FragmentIndicator.OnIndicateListener; /**
* @author yangyu
* 功能描述：主Activity类，继承自FragmentActivity
*/
public class MainActivity extends FragmentActivity { public static Fragment[] mFragments; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main); setFragmentIndicator(); } /**
* 初始化fragment
*/
private void setFragmentIndicator(int whichIsDefault) {
mFragments = new Fragment[];
mFragments[] = getSupportFragmentManager().findFragmentById(R.id.fragment_home);
mFragments[] = getSupportFragmentManager().findFragmentById(R.id.fragment_search);
mFragments[] = getSupportFragmentManager().findFragmentById(R.id.fragment_settings);
getSupportFragmentManager().beginTransaction().hide(mFragments[])
.hide(mFragments[]).hide(mFragments[]).show(mFragments[whichIsDefault]).commit(); FragmentIndicator mIndicator = (FragmentIndicator) findViewById(R.id.indicator);
FragmentIndicator.setIndicator(whichIsDefault);
mIndicator.setOnIndicateListener(new OnIndicateListener() {
@Override
public void onIndicate(View v, int which) {
getSupportFragmentManager().beginTransaction()
.hide(mFragments[]).hide(mFragments[])
.hide(mFragments[]).show(mFragments[which]).commit();
}
});
} @Override
protected void onResume() {
super.onResume();
} @Override
protected void onPause() {
super.onPause();
} }
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