android中判断sim卡状态和读取联系人资料的方法

在写程序中，有时候可能需要获取sim卡中的一些联系人资料。在获取sim卡联系人前，我们一般会先判断sim卡状态，找到sim卡后再获取它的资料，如下代码我们可以读取sim卡中的联系人的一些信息。

PhoneTest.java
package com.android.test;  

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.TextView;  

public class PhoneTest extends Activity {
    private TextView mTextView;
    protected Cursor mCursor = null;
    private TelephonyManager mTelephonyManager;
    private String mString = "";  

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mTextView = (TextView)findViewById(R.id.text);
        mTextView.setTextSize(20.3f);
        isSimExist();
        if(getSimState() == TelephonyManager.SIM_STATE_READY){
            mString += "    卡存在\n";
            getSimContacts("content://icc/adn"); //一般用这一条，如果这条不行的话可以试试下面的一条。
            getSimContacts("content://sim/adn");//此种读法在我们手机里不能读取，所以，还是用上个uri比较好。
        }
        mTextView.setText(mString);
    }  

    private void getSimContacts(String str){
        Intent intent = new Intent();
        intent.setData(Uri.parse(str));
        Uri uri = intent.getData();
        mCursor = getContentResolver().query(uri, null, null, null, null);
        if(mCursor == null){
            mString += "不能从" + str + "读数据\n";
            return ;
        }
        mString += "第一列：" + mCursor.getColumnName(0) + "\n";
        mString += "第二列：" + mCursor.getColumnName(1) + "\n";
        mString += "第三列：" + mCursor.getColumnName(2) + "\n";
        mString += "第四列：" + mCursor.getColumnName(3) + "\n";
        mString += "列数：" + mCursor.getColumnCount() + "\n";
        mString += "行数：" + mCursor.getCount() + "\n";
        if (mCursor != null) {
            while (mCursor.moveToNext()) {
                // 取得联系人名字
                int nameFieldColumnIndex = mCursor.getColumnIndex("name");
                mString += mCursor.getString(nameFieldColumnIndex)+"    ";
                // 取得电话号码
                int numberFieldColumnIndex = mCursor
                        .getColumnIndex("number");
                mString += mCursor.getString(numberFieldColumnIndex)+"    ";
                // 取得邮箱
                int emailsFieldColumnIndex = mCursor
                        .getColumnIndex("emails");
                mString += mCursor.getString(emailsFieldColumnIndex)+"    ";
                // 取得id
                int idFieldColumnIndex = mCursor
                        .getColumnIndex("_id");
                mString += mCursor.getString(idFieldColumnIndex)+"\n";
            }
        }
        mString += mCursor + "\n";
        mCursor.close();
    }  

    private int getSimState(){
        return mTelephonyManager.getSimState();
    }  

    private void isSimExist(){
        mTelephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
         int simState = mTelephonyManager.getSimState();  

         switch (simState) {  

             case TelephonyManager.SIM_STATE_ABSENT:
                 mString = "无卡";
                 // do something
                 break;  

             case TelephonyManager.SIM_STATE_NETWORK_LOCKED:
                 mString = "需要NetworkPIN解锁";
                 // do something  

                 break;  

             case TelephonyManager.SIM_STATE_PIN_REQUIRED:
                 mString = "需要PIN解锁";
                 // do something
                 break;  

             case TelephonyManager.SIM_STATE_PUK_REQUIRED:
                 mString = "需要PUN解锁";
                 // do something
                 break;  

             case TelephonyManager.SIM_STATE_READY:
                 mString = "良好";
                 // do something
                 break;  

             case TelephonyManager.SIM_STATE_UNKNOWN:
                 mString = "未知状态";
                 // do something
                 break;
         }
         mTextView.setText(mString);
    }  

}
[代码] main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <ScrollView android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView  android:id="@+id/text"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
    </LinearLayout>
    </ScrollView>
</LinearLayout>
[代码] AndroidManefist.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.android.test"
      android:versionCode="1"
      android:versionName="1.0">  

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".PhoneTest"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>  

    </application>
    <uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission>
</manifest>