fragment 碎片整理

activity_m1.xml

<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.hanqi.music_bofangqi.MActivity1">

    <fragment
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:name="com.hanqi.music_bofangqi.MyFragment1"
        android:id="@+id/fragment1"
        />
    <fragment
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:name="com.hanqi.music_bofangqi.MyFragment2"
        android:id="@+id/fragment2"
        />
</LinearLayout>

MActivity.java

package com.hanqi.music_bofangqi;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

//1-Activity要继承FragmentActivity
public class MActivity1 extends FragmentActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_m1);
    }
}

activity_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.hanqi.music_bofangqi.FragmentActivity"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="添加Fragment"
            android:onClick="bt1_onclick"/>
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="移除Fragment"
            android:onClick="bt2_onclick"/>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:id="@+id/ll"
        android:orientation="horizontal">

    </LinearLayout>

</LinearLayout>

FragmentActivity.java

package com.hanqi.music_bofangqi;

import android.os.Bundle;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

public class FragmentActivity extends AppCompatActivity {
    FragmentManager fragmentManager;
    FragmentTransaction fragmentTransaction;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fragment);
        //碎片的容器
        // 1.获得放置fragment的布局管理器
        //linearLayout= (LinearLayout)findViewById(R.id.ll);
        //2.动态加载fragment
        //1）得到管理器
        fragmentManager =getSupportFragmentManager();
        //2) 得到事务管理器
        fragmentTransaction = fragmentManager.beginTransaction();
        //3）向容器内放入fragment，参数：1-容器id  2-fragment的实例,并提交
        fragmentTransaction.add(R.id.ll,new MyFragment1()).commit();
    }
    MyFragment2 myFragment2;

    //动态添加
    public void bt1_onclick(View v)
    {
        fragmentManager =getSupportFragmentManager();
        fragmentTransaction = fragmentManager.beginTransaction();
        //加入回退栈
        fragmentTransaction.addToBackStack(null);
        //3）向容器内放入fragment，参数：1-容器id  2-fragment的实例,并提交
        // replace替换
        fragmentTransaction.replace(R.id.ll, myFragment2).commit();
    }
    public void bt2_onclick(View v)
    {
        fragmentManager =getSupportFragmentManager();
        fragmentTransaction = fragmentManager.beginTransaction();
        //加入回退栈
        fragmentTransaction.addToBackStack(null);
        //remove移除
        fragmentTransaction.remove(myFragment2).commit();
    }

}

fragment_my_fragment1.xml

<FrameLayout 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"
    tools:context="com.hanqi.music_bofangqi.MyFragment1">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="这是碎片1"
        android:background="#f00"/>

</FrameLayout>

fragment_my_fragment2.xml

<FrameLayout 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"
    tools:context="com.hanqi.music_bofangqi.MyFragment1">

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="这是碎片2" />

</FrameLayout>

MyFragment1.java

package com.hanqi.music_bofangqi;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class MyFragment1 extends Fragment {

    public MyFragment1()
    {
        Log.e("TAG","构造碎片");

    }
    //在Activity显示完成之后调用的
    // 设置Fragment的视图
    //返回一个显示的View
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        Log.e("TAG","onCreateView被调用");

        return inflater.inflate(R.layout.fragment_my_fragment1, container, false);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.e("TAG", "onCreate被调用");
    }

    //在Activity创建完成后调用
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Log.e("TAG", "onActivityCreated被调用");
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        Log.e("TAG", "onAttach被调用");
    }

    @Override
    public void onStart() {
        super.onStart();
        Log.e("TAG", "onStart被调用");
    }

    @Override
    public void onResume() {
        super.onResume();
        Log.e("TAG", "onResume被调用");
    }

    @Override
    public void onPause() {
        super.onPause();
        Log.e("TAG", "onPause被调用");
    }

    @Override
    public void onStop() {
        super.onStop();
        Log.e("TAG", "onStop被调用");
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.e("TAG", "onDestroy被调用");
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        Log.e("TAG", "onDestroyView被调用");
    }

    @Override
    public void onDetach() {
        super.onDetach();
        Log.e("TAG", "onDetach被调用");
    }
}

MyFragment2.java

package com.hanqi.music_bofangqi;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class MyFragment2 extends Fragment {

    public MyFragment2()
    {

    }
    //在Activity显示完成之后调用的
    // 设置Fragment的视图
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        //手动创建视图
        TextView textView = new TextView(getActivity());

        textView.setText("这是手动生成的内容");
        return textView;
        //return inflater.inflate(R.layout.fragment_my_fragment2, container, false);

    }

}