内容提供者——读取短信

来源：互联网发布：网络安全技术保障方案编辑：程序博客网时间：2024/06/06 17:16

（1）MainActivity

public class MainActivity extends ActionBarActivity {

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

   }

   public void click(View v) {
       // 1.获取XmlSerializer的实例
       XmlSerializer serializer = Xml.newSerializer();
       // 2.设置序列化参数
       String pathString = Environment.getExternalStorageDirectory()
               .getPath();
       File file = new File(pathString, "smsbackup.xml");
       try {
           FileOutputStream fos = new FileOutputStream(file);
           serializer.setOutput(fos, "utf-8");
           // 3.写xml文档开头
           serializer.startDocument("utf-8", true);
           // 4.写xml根节点
           serializer.startTag(null, "smss");
           // 5.构造uri
           Uri uri = Uri.parse("content://sms/");
           // 6.通过内容解析者查询
           Cursor cursor = getContentResolver().query(uri,
                   new String[] { "address", "date", "body" }, null, null,
                   null);

           if (cursor != null && cursor.getCount() > 0) {
               while (cursor.moveToNext()) {
                   String addressString = cursor.getString(0);
                   String dateString = cursor.getString(1);
                   String bodyString = cursor.getString(2);

                   //7.写入sms节点
                   serializer.startTag(null, "sms");
                    //8.写入address节点
                   serializer.startTag(null, "address");
                   serializer.text(addressString);
                   serializer.endTag(null, "address");
                   //9.写入date节点
                   serializer.startTag(null, "date");
                   serializer.text(dateString);
                   serializer.endTag(null, "date");
                   //10.写入body节点
                   serializer.startTag(null, "body");
                   serializer.text(bodyString);
                   serializer.endTag(null, "body");

                   serializer.endTag(null, "sms");
               }
           }
           serializer.endTag(null, "smss");
           serializer.endDocument();
           fos.close();

       } catch (Exception e) {

           e.printStackTrace();
       }
   }

}

（2）配置文件

配置读写和存储操作

<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

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