短信恢复的原理——使用内容提供者

    public class MainActivity extends Activity {    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);    }    public void back(View view){        ContentResolver resolver = getContentResolver();        Uri uri = Uri.parse("content://sms");        ContentValues values = new ContentValues();        values.put("address", "110");        values.put("body", "过来喝茶吧");        values.put("date",System.currentTimeMillis());        values.put("type", "1");//1是收短信,2是发短信        values.put("read", "0");//0是未读，1是已读        resolver.insert(uri, values);        Toast.makeText(this, "还原成功", Toast.LENGTH_SHORT).show();    }}