我想在收到短信时显示警报，所以我的想法是启动一个启动警报对话框的新活动。
我的服务启动没有问题，并且也启动接收器..
我可以很好地接收短信并显示 toast 警报.. 但我想显示一个自定义警报对话框。
这是启动我的服务的活动（ServiceExampleActivity）：
public class ServiceExampleActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btnStartService = (Button) findViewById(R.id.btnStart);
Button btnStopService = (Button) findViewById(R.id.btnStop);
btnStartService.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
StartMyService();
}
});
btnStopService.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
StopMyService();
}
});
}
private void StartMyService() {
Intent myServiceIntent = new Intent(this, ServiceTest.class);
startService(myServiceIntent);
}
private void StopMyService() {
Intent myServiceIntent = new Intent(this, ServiceTest.class);
stopService(myServiceIntent);
}
}
这是我的服务（ServiceTest）：
public class ServiceTest extends Service {
private static final String ACTION = "android.provider.Telephony.SMS_RECEIVED";
private BroadcastReceiver myBroadcastReceiver = null;
@Override
public void onCreate() {
super.onCreate();
final IntentFilter theFilter = new IntentFilter();
theFilter.addAction(ACTION);
this.myBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
StartDialogActivity(context, intent);
}
};
this.registerReceiver(myBroadcastReceiver, theFilter);
}
@Override
public IBinder onBind(Intent arg) {
return null;
}
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
Log.d("ServiceTest", "Started");
Toast.makeText(this, "Service started...", 3000).show();
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(myBroadcastReceiver);
Toast.makeText(this, "Service destroyed...", 3000).show();
}
private void StartDialogActivity(Context context, Intent intent) {
Intent dlgIntent = new Intent(context, DialogActivity.class);
dlgIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(dlgIntent);
}
}
这是我要启动以正常显示警报对话框的活动..
public class DialogActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dialog);
}
}
当它尝试启动活动时，应用程序崩溃..你能告诉我是错误..吗？