16 读取短信内容

• 所需权限

    <!-- 读取短信的权限 -->
      <uses-permission android:name="android.permission.READ_SMS"/>

• 布局Activity ：

  <?xml version="1.0" encoding="utf-8"?>
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.qf.day16_contentresolver_sms_demo1"
      android:versionCode="1"
      android:versionName="1.0" >
  
      <uses-sdk
          android:minSdkVersion="8"
          android:targetSdkVersion="18" />
      <!-- 读取短信的权限 -->
      <uses-permission android:name="android.permission.READ_SMS"/>
  
      <application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" >
          <activity
              android:name="com.qf.day16_contentresolver_sms_demo1.MainActivity"
              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>
  
  </manifest>
  

• java代码（MainActivity）

  package com.qf.day16_contentresolver_sms_demo1;
  
  import android.net.Uri;
  import android.os.Bundle;
  import android.annotation.SuppressLint;
  import android.app.Activity;
  import android.content.ContentResolver;
  import android.database.Cursor;
  import android.view.Menu;
  import android.widget.ListView;
  import android.widget.SimpleCursorAdapter;
  
  /**
   * 使用ContentResolver获取数据步骤:
   * 1,获取ContentResolver对象
   * 2,使用ContentResolver 查询数据,  得到Uri对象
   * 3,将数据展示到ListVIew
   *
   */
  public class MainActivity extends Activity {
  
      //内容解析器
      private ContentResolver contentResolver;
      //Uri  访问私有数据的路径
      private  Uri smsUri = Uri.parse("content://sms");
  
      private ListView lv;
  
      private SimpleCursorAdapter adapter;
  
      @SuppressLint("NewApi")
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
  
  
           lv = (ListView) findViewById(R.id.lv);
          //获取实例化对象
          contentResolver = getContentResolver();
  
          /**
           * 获取数据  通过Uri
           * 
           * 参数1:访问ContentProvider 的路径
           * 参数2:查询的字段项       null代表查询所有
           * 参数3:  查询的条件  _id =?  body = ?
           * 参数4:  查询条件的占位符
           * 参数5: 排序
           *  SimpleCursorAdapter 必须要查找_id字段 哪怕你不使用
           */
          Cursor cursor = contentResolver.query(smsUri, null, null, null, null);
  
          adapter = new SimpleCursorAdapter(MainActivity.this,
                  R.layout.item, 
                  cursor, new String[]{"address","body"}, 
                  new int[]{R.id.tv_address,R.id.tv_body},
                  SimpleCursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
          lv.setAdapter(adapter);
      }
  
  
  
  }
  

• layout下布局文件
  activity_main.xml(Activity界面)

  <RelativeLayout 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=".MainActivity" >
  
      <ListView 
          android:id="@+id/lv"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          ></ListView>
  
  </RelativeLayout>
  

  list填充的布局

  <RelativeLayout 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=".MainActivity" >
  
      <ListView 
          android:id="@+id/lv"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          ></ListView>
  
  </RelativeLayout>