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MainActivity如下:

package cc.c;import android.net.Uri;import android.os.Bundle;import android.app.Activity;import android.app.LoaderManager.LoaderCallbacks;import android.content.Context;import android.content.Loader;import android.database.Cursor;/** * Demo描述: * 利用Loader实现窃听查询 *  *  * 注意事项: * 1 Loader是3.0之后才引进来的 * 2 若在3.0之前使用Loader那么Activity须继承FragmentActivity * 3 在Loader内部封装好了ContentOberver * */public class MainActivity extends Activity implements LoaderCallbacks
   
    {    private final int LOADER_ID=9527;    private Context mContext;    private Uri mUri=null;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		init();	}		private void init(){		mContext=this;		mUri = Uri.parse("content://sms/inbox");		this.getLoaderManager().initLoader(LOADER_ID, null, this);	}	@Override	public Loader
    
      onCreateLoader(int arg0, Bundle bundle) {		String[] projection = new String[] {"_id","address","body","type"};		Loader
     
       cursorLoader=		new android.content.CursorLoader(mContext, mUri, projection, null, null, "date desc");		return cursorLoader;	}	@Override	public void onLoadFinished(Loader
      
        loader, Cursor cursor) {        while (cursor.moveToNext()) {        	String address  = cursor.getString(cursor.getColumnIndex("address"));    		String body = cursor.getString(cursor.getColumnIndex("body"));    		int id = cursor.getInt(cursor.getColumnIndex("_id"));    		String type  = cursor.getString(cursor.getColumnIndex("type"));    		System.out.println("------> 收到新的短信:"+"来自="+address+",内容="+body+",id="+id+",类别="+type);    		break;		}	}	@Override	public void onLoaderReset(Loader
       
         loader) {			}		}
       
      
     
    
   

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