Android BroadcastReceiver onReceive在MainActivity中更新TextView

Android BroadcastReceiver onReceive在MainActivity中更新TextView

在您的

MainActivity

初始化

MainActivity

类变量如下。

public class MainActivity extends Activity {    private static MainActivity ins;    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        ins = this;         }    public static MainActivity  getInstace(){        return ins;    }    public void updateTheTextView(final String t) {        MainActivity.this.runonUiThread(new Runnable() { public void run() {     TextView textV1 = (TextView) findViewById(R.id.textV1);     textV1.setText(t); }        });    }}public class NotifAlarm extends BroadcastReceiver {    @Override    public void onReceive(Context context, Intent intent) {        try { MainActivity  .getInstace().updateTheTextView("String");        } catch (Exception e) {        }    }}