Recently I am working on a Flutter plugin for my project. My plugin requires startActivityForResult but can't figure out how to use it according to Flutter plugin development. I have given my code below.
public class MyPlugin implements FlutterPlugin, MethodCallHandler {
private static final int REQUEST_CODE = 1;
Result result;
#Override
public void onAttachedToEngine(#NonNull FlutterPluginBinding flutterPluginBinding) {
channel = new MethodChannel(flutterPluginBinding.getBinaryMessenger(), "my_plugin");
channel.setMethodCallHandler(this);
}
#Override
public void onDetachedFromEngine(#NonNull FlutterPluginBinding binding) {
channel.setMethodCallHandler(null);
}
#Override
public void onMethodCall(#NonNull MethodCall call, #NonNull Result result) {
this.result = result;
if (call.method.equals("myMethod")) {
myMethod();
} else {
result.notImplemented();
}
}
private void myMethod() {
// my intent instance will be here
startActivityForResult(intent, REQUEST_CODE); // Cannot resolve method 'startActivityForResult'
}
#Override
public boolean onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
try {
if (requestCode == REQUEST_CODE) {
result.success("done");
} else {
result.error("Something went wrong", null, null);
}
} catch (Exception e) {
Log.e(TAG, "Exception: " + e.toString());
}
return false;
}
}
Try this solution to get the Context. After, call the intent using the Context:
private void myMethod() {
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
Related
//Here is my code
package name.ratson.cordova.admob.rewardvideo;
import android.util.Log;
import com.google.android.gms.ads.reward.RewardItem;
import com.google.android.gms.ads.reward.RewardedVideoAdListener;
import org.json.JSONException;
import org.json.JSONObject;
import name.ratson.cordova.admob.AbstractExecutor;
class RewardVideoListener implements RewardedVideoAdListener {
private final RewardVideoExecutor executor;
RewardVideoListener(RewardVideoExecutor executor) {
this.executor = executor;
}
#Override
public void onRewardedVideoAdFailedToLoad(int errorCode) {
synchronized (executor.rewardedVideoLock) {
executor.isRewardedVideoLoading = false;
}
JSONObject data = new JSONObject();
try {
data.put("error", errorCode);
data.put("reason", AbstractExecutor.getErrorReason(errorCode));
data.put("adType", executor.getAdType());
} catch (JSONException e) {
e.printStackTrace();
}
executor.fireAdEvent("admob.rewardvideo.events.LOAD_FAIL", data);
}
#Override
public void onRewardedVideoAdLeftApplication() {
JSONObject data = new JSONObject();
try {
data.put("adType", executor.getAdType());
} catch (JSONException e) {
e.printStackTrace();
}
executor.fireAdEvent("admob.rewardvideo.events.EXIT_APP", data);
}
#Override
public void onRewardedVideoAdLoaded() {
synchronized (executor.rewardedVideoLock) {
executor.isRewardedVideoLoading = false;
}
Log.w("AdMob", "RewardedVideoAdLoaded");
executor.fireAdEvent("admob.rewardvideo.events.LOAD");
if (executor.shouldAutoShow()) {
executor.showAd(true, null);
}
}
#Override
public void onRewardedVideoAdOpened() {
executor.fireAdEvent("admob.rewardvideo.events.OPEN");
}
#Override
public void onRewardedVideoStarted() {
executor.fireAdEvent("admob.rewardvideo.events.START");
}
#Override
public void onRewardedVideoAdClosed() {
executor.fireAdEvent("admob.rewardvideo.events.CLOSE");
executor.clearAd();
}
#Override
public void onRewarded(RewardItem reward) {
JSONObject data = new JSONObject();
try {
data.put("adType", executor.getAdType());
data.put("rewardType", reward.getType());
data.put("rewardAmount", reward.getAmount());
} catch (JSONException e) {
e.printStackTrace();
}
executor.fireAdEvent("admob.rewardvideo.events.REWARD", data);
}
}
your RewardVideoListener class is implementing RewardedVideoAdListener in interface.
In order to compile with the RewardedVideoAdListener interface you need to implement all the interface methods including RewardedVideoAdListener.
So add this to your class:
#Override
public void onRewardedVideoCompleted() {
Toast.makeText(this, "onRewardedVideoCompleted", Toast.LENGTH_SHORT).show();
}
For Cordova projects - TOAST was undefined. This helped...
#Override
public void onRewardedVideoCompleted() {
fireAdEvent(EVENT_AD_WILLDISMISS, ADTYPE_REWARDVIDEO);
}
I'm implementing in a LauncherActivity (with just a loading indicator) an Observable (Single) from RxJava library to login with the previously recorded users credentials.
The activity is very very simple, and yet I get a skipped frames warning (40ish), both on my phone and on emulator, and I can't figure out why (though sometimes it doesn't show up).
Here is the code :
public class LauncherActivity extends AppCompatActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_launcher);
mProgressBar = findViewById(R.id.progress_bar);
mProgressBar.setVisibility(View.VISIBLE);
if (UsersUtils.hasCredentialsRecorded(this)) {
getAccessToken();
} else {
login();
}
}
public void getAccessToken() {
Callable<Token> callable = new Callable<Token>() {
#Override
public Token call() throws Exception {
final Map<String, byte[]> credentials = UsersUtils.getCredentials(getApplicationContext());
Token token = OauthCalls.getToken(new String(credentials.get(UsersUtils.PREFERENCES_USER_KEY)),
new String(credentials.get(UsersUtils.PREFERENCES_PASS_KEY)));
return token;
}
};
Single.fromCallable(callable)
.subscribeOn(Schedulers.io())
.subscribe(new DisposableSingleObserver<Token>() {
#Override
public void onSuccess(Token token) {
if (token == null) {
login();
} else {
Intent intent = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent);
}
}
#Override
public void onError(Throwable e) {
login();
}
});
}
public void login() {
Intent intent = new Intent(this, LoginActivity.class);
startActivity(intent);
}
}
Thanks a lot for your help !
I am trying to create textview in android which display the remaining time(seconds).
Have used runOnUiThread and Hadnler for this and everything seems working fine(sysout and debug shows that both threads are executed and value is updated properly).
However, on UI the textview value is not updated properly. It gets updated with last value when the thread completes.
I am writing the below code inside private method of the fragment.
final TextView timerText = (TextView) mainView.findViewById(R.id.timerText);
timerText.setText(R.string.maxAllowedSeconds);
handler.post(new Runnable() {
#Override
public void run() {
while(true)
{
System.out.println("Text:"+ ""+maxAllowedSeconds);
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
maxAllowedSeconds--;
if(maxAllowedSeconds <= 0)
break;
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
System.out.println("Running on UI Thread : " + maxAllowedSeconds);
timerText.setText("" + maxAllowedSeconds);
}
});
}
}
});
Gone through many of the previous questions in this area but none seems to have concrete solutions for this problem.
Thanks in advance.
SOLUTOIN:
Finally I used AsynchTask which worked perfectly as expected.
private class RapidFireAsyncTimerTask extends AsyncTask<Integer, Integer, Void> {
private Context context;
private View rootView;
public RapidFireAsyncTimerTask(Context ctx, View rootView) {
this.context = ctx;
this.rootView = rootView;
}
#Override
protected Void doInBackground(Integer... params) {
int maxSec= params[0];
while (true) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
publishProgress(--maxSec);
if (maxSec <= 0)
break;
}
return null;
}
#Override
protected void onProgressUpdate(final Integer... values) {
((TextView) rootView.findViewById(R.id.timerText)).setText("" + values[0]);
}
#Override
protected void onPostExecute(Void aVoid) {
//next task
}
}
Instead of Handler, it worked with AsynchTask(No runOnUiThread needed).
public RapidFireAsyncTimerTask(Context ctx, View rootView) {
this.context = ctx;
this.rootView = rootView;
}
#Override
protected Void doInBackground(Integer... params) {
int maxSec= params[0];
while (true) {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
publishProgress(--maxSec);
if (maxSec <= 0)
break;
}
return null;
}
#Override
protected void onProgressUpdate(final Integer... values) {
((TextView) rootView.findViewById(R.id.timerText)).setText("" + values[0]);
}
#Override
protected void onPostExecute(Void aVoid) {
//next task
}
}
I am devolping an application which turns the screen off and on based proximity sensor. The code i wrote sucessful turns the screen off and on.
This is the acivity from which the proximity sensors are registed and unregistered
MainActivity.java
public class MainActivity extends Activity {
public String TAG = "MainActivity";
BackgroundService mService;
boolean mBound = false;
boolean firstTime = true;
Intent BackgroundIntent ;
private ServiceConnection mConnection = new ServiceConnection() {
#Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
Log.w(TAG, "Service Disconeted");
mBound = false;
mService = null;
}
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
// TODO Auto-generated method stub
LocalBinder binder = (LocalBinder)service;
mService = binder.getService();
mBound=true;
if(firstTime){
MainActivity.this.onStart();
}
firstTime = false;
Log.w(TAG, "Service Connectedd");
}
};
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.w(TAG, "onCreate()");
setContentView(R.layout.activity_main);
Button buttonStart = (Button)findViewById(R.id.button1);
Button buttonStop = (Button)findViewById(R.id.button2);
buttonStart.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
mService.enableSensor();
Log.w(TAG, "ButtonStart Clicked");
}
});
buttonStop.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(mBound){
mService.disableSensor();
}
Log.w(TAG, "ButtonSTOP Clicked");
}
});
startService(new Intent(this,BackgroundService.class));
}
#Override
public void onStart(){
super.onStart();
Log.w(TAG, "onStart Method");
Intent intent = new Intent(getApplicationContext(),BackgroundService.class);
getApplicationContext().bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
}
#Override
protected void onStop(){
super.onStop();
if(mBound){
getApplicationContext().unbindService(mConnection);
Log.w(TAG, "Unbinding the service");
}
Log.w(TAG, "onStop Method");
}
}
This is the service which has a SensorEventListner which which listens to the changes in the proximity sensor
BackgroundService.java
public class BackgroundService extends Service{
public String TAG = "BackgroundService";
private final IBinder mBinder = new LocalBinder();
private SensorManager mSensorManager ;
private Sensor mProximitySensor ;
private SensorEventListener mSenosorEventListener;
private PowerManager.WakeLock proximityWakeLock;
public float maxSensorValue;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
Log.e(TAG, "Binding with backgroundService");
return mBinder;
}
public class LocalBinder extends Binder{
BackgroundService getService(){
return BackgroundService.this;
}
}
#Override
public void onCreate(){
Log.w(TAG, "BackgroundService Created");
proximityWakeLock = ((PowerManager)getSystemService("power")).newWakeLock(32, "");
proximityWakeLock.setReferenceCounted(false);
mSensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY);
maxSensorValue = mProximitySensor.getMaximumRange();
mSenosorEventListener = new SensorEventListener() {
#Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
if(event.sensor.getType() == Sensor.TYPE_PROXIMITY ){
if(event.values[0] == maxSensorValue)
{
Log.w(TAG, "Object moved ****AWAY*****");
screanTurnOn();
}
else{
Log.w(TAG, "Object moved ****NEAR******");
screanTurnOFF();
}
}
}
#Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "Sensor Accuracy Changed", Toast.LENGTH_SHORT).show();
}
};
}
#Override
public void onDestroy(){
mSensorManager.unregisterListener(mSenosorEventListener);
Log.w(TAG, "BackgroundService is Destroyed");
super.onDestroy();
}
public void screanTurnOFF(){
if(proximityWakeLock.isHeld()){
this.proximityWakeLock.release();
Log.e(TAG,"WakeLock is released");
}
}
public void screanTurnOn(){
if(!proximityWakeLock.isHeld())
proximityWakeLock.acquire();
while(proximityWakeLock.isHeld()){
Log.e(TAG, "WakeLock is acurqerd");
return;
}
}
public void enableSensor(){
if(mProximitySensor == null){
Log.w(TAG, "No Proximity detector found");
}else{
mSensorManager.registerListener(mSenosorEventListener, mProximitySensor,SensorManager.SENSOR_DELAY_NORMAL);
Log.w(TAG, "Proximity detector Enabled : "+ mProximitySensor.getName());
}
}
public void disableSensor(){
mSensorManager.unregisterListener(mSenosorEventListener,mProximitySensor);
Log.w(TAG, "Proximity Detector Disabled : " + EnableProximitySensor);
}
}
I have two buttons, one that registers the SensorEventListner to the sensor manager, and one to unregister it. The first button works perfectly. When i click on the second button, the ProximityEventListen remain unregistered.The sensoEventLister still works but the app will not show any Log messages from the BackGroundService.
If i comment out the screenTurnON() and screenTurnOFF() functions, the code works perfectly.
Please Help me out
I'm using the new maps v3 API from gwt-google-apis.
Is it possible to capture events from GWT widgets that are inside InfoWindow? Am I missing something?
Tried code above (button.addClickHandler) and it doesn't show the alert:
Marker m = Marker.create();
m.setIcon(MarkerImage.create(icone));
m.setPosition(LatLng.create(posicao.lat(), posicao.lng()));
m.setMap(map);
m.addClickHandler(new ClickHandler() {
#Override
public void handle(MouseEvent event) {
InfoWindow info = InfoWindow.create();
Button button = new Button("Desativar");
button.addClickHandler(new com.google.gwt.event.dom.client.ClickHandler() {
#Override
public void onClick(ClickEvent event) {
Window.alert("click");
}
});
final HTMLPanel html = new HTMLPanel(("<div id='button'></div>"));
html.add(button, "button");
info.setContent(html.getElement());
info.setPosition(posicao);
info.open(map);
}
});
Thanks.
The problem is result of a broken hierarchy between the widgets, the normal way to do it is by attach / detach widget. You do it by setting of the widget's element. This is also matter of Google Maps API.
This can be resolved by using fake panel which will be part of the InfoWindow, so when you make setContent(Widget widget) the fake panel will be updated and the element of the widget will be set to the content (as previous).
Please take a look at this class:
public class MyInfoWindow extends InfoWindow {
static class FakePanel extends ComplexPanel {
public FakePanel(Widget w) {
w.removeFromParent();
getChildren().add(w);
adopt(w);
}
#Override
public boolean isAttached() {
return true;
}
public void detachWidget() {
this.remove(0);
}
}
private IsWidget widgetContent = null;
FakePanel widgetAttacher;
public MyInfoWindow() {
super(InfoWindowImpl.impl.construct());
}
private void detachWidget() {
if (this.widgetAttacher != null) {
this.widgetAttacher.detachWidget();
this.widgetAttacher = null;
}
}
public void close() {
super.close();
detachWidget();
}
public void setContent(String content) {
this.widgetContent = null;
this.detachWidget();
super.setContent(content);
}
/** */
public void setContent(Widget value) {
this.widgetContent = value;
setContent(value.getElement());
if (this.widgetAttacher == null) {
addListener(getJso(), "closeclick", new Runnable() {
#Override
public void run() {
detachWidget();
}
});
this.widgetAttacher = new FakePanel(value);
} else if (this.widgetAttacher.getWidget(0) != value) {
this.widgetAttacher.detachWidget();
this.widgetAttacher = new FakePanel(value);
}
}
private void setContent(Element element) {
InfoWindowImpl.impl.setContent(getJso(), element);
}
public IsWidget getContentWidget() {
return widgetContent;
}
public final native void addListener(JavaScriptObject jso, String whichEvent, Runnable handler)
/*-{
var that = jso;
$wnd.google.maps.event.addListener(jso, whichEvent, function() {
handler.#java.lang.Runnable::run()();
});
}-*/;
}
I had to build a wrapper over InfoWindow to make it work.
public class NXInfoWindow {
static class FakePanel extends ComplexPanel {
public FakePanel(Widget w) {
w.removeFromParent();
getChildren().add(w);
adopt(w);
}
#Override
public boolean isAttached() {
return true;
}
public void detachWidget() {
this.remove(0);
}
}
private InfoWindow info;
private IsWidget widgetContent = null;
private Long id;
FakePanel widgetAttacher;
public static NXInfoWindow create(Long id){
NXInfoWindow myInfo = new NXInfoWindow();
myInfo.info = InfoWindow.create();
myInfo.id = id;
return myInfo;
};
private void detachWidget() {
if (this.widgetAttacher != null) {
this.widgetAttacher.detachWidget();
this.widgetAttacher = null;
}
}
public void close() {
info.close();
detachWidget();
}
public void setPosition(LatLng posicao) {
info.setPosition(posicao);
}
public void open(GoogleMap map) {
info.open(map);
}
public void setContent(Widget value) {
this.widgetContent = value;
info.setContent(value.getElement());
if (this.widgetAttacher == null) {
addListener(info, "closeclick", new Runnable() {
#Override
public void run() {
detachWidget();
}
});
this.widgetAttacher = new FakePanel(value);
} else if (this.widgetAttacher.getWidget(0) != value) {
this.widgetAttacher.detachWidget();
this.widgetAttacher = new FakePanel(value);
}
}
private void setContent(Element element) {
this.setContent(element);
}
public IsWidget getContentWidget() {
return widgetContent;
}
public final native void addListener(JavaScriptObject jso, String whichEvent, Runnable handler)
/*-{
var that = jso;
$wnd.google.maps.event.addListener(jso, whichEvent, function() {
handler.#java.lang.Runnable::run()();
});
}-*/;
}