Develop Reference

After calling the SplashScreenActivity the Application minimizes

I have the following Problem: I want to create a Splash Screen, that I can call during my Game Loop (it is a "Next-Level" splash screen).
When I call the Splash Screen, it works with animation and everything but the app minimizes itself after 5 seconds. This Splash Screen call happens after the main activity was already started.
My SplashActivity looks like this:
public class SplashActivity extends AppCompatActivity {
private ImageView logo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
logo = findViewById(R.id.logo);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
finish();
}
}, 5000);
Animation anim = AnimationUtils.loadAnimation(this, R.anim.viewanimation);
logo.startAnimation(anim);
}
}
And I want to call it in my GameLoop with the following call:
Intent i = new Intent(gamePanel.getContext(), SplashActivity.class);
gamePanel.getContext().startActivity(i);
The SplashScreen opens and the animation works, but then the MainActivity should be present again (not started new).

Try this one Splash.java
public class Splash extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
Thread myThread=new Thread(){
#Override
public void run() {
try {
Animation anim = AnimationUtils.loadAnimation(this, R.anim.viewanimation);
logo.startAnimation(anim);
//sleep time after animation
sleep(3000);
//to end the splash screen and call next activity with Intent
finish();
Intent intent = new Intent(Splash.this,MainActivity.class);
startActivity(intent);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
myThread.start();
}
}
In your manifest file, Splash.java will be your first activity to launch,
<activity android:name=".Splash">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Hope it helps.

using finishActivity() instead of finish().
finish() Call this when your activity is done and should be closed. The ActivityResult is propagated back to whoever launched you via onActivityResult().
finishActivity(int requestCode) is used to finish another activity that you had previously started with startActivityForResult(Intent, int)

Wrong activity displayed when implicit intent received from another app with Action.SEND

I have an app with two activities: MainActivity, which contains a URL entry field where the user can enter a YouTube video URL and press a submit button, to start the second activity, VideoActivity, which displays some information about this video (fetched from another web server).
The app also has a feature to receive intent via the Youtube application. When user presses the share button within the Youtube app, my app appears in the share list. Upon pressing share from the Youtube app, MainActivity should be brought to the front, and the URL should be posted within the MainActivity's URL field.
However, this only happens correctly on the first share. If the app is in the background when user shares from Youtube app, they are taken to whatever the last visible activity was, whether it is MainActivity or VideoActivity, (and even if it is MainActivity, the URL is not posted into the URL field, but the field is left in whatever state it was in when the app was last visible).
Here is my current AndroidManifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.youcmt.youdmcapp">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity"
android:launchMode="singleTop">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND"/>
<category android:name="android.intent.category.DEFAULT"/>
<data android:mimeType="text/plain"/>
</intent-filter>
</activity>
<activity
android:name=".VideoActivity"
android:parentActivityName=".MainActivity"/>
<service
android:name=".FetchVideoService"
android:exported="false"/>
</application>
</manifest>
Here is my MainActivity.java code:
public class MainActivity extends AppCompatActivity {
private ResponseReceiver mReceiver;
private EditText mUrlEditText;
private Button mSearchButton;
private ProgressBar mProgressBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_main);
super.onCreate(savedInstanceState);
mUrlEditText = findViewById(R.id.url_search_et);
Intent intent = getIntent();
if (intent.getType()!=null &&
intent.getType().equals("text/plain")) {
Bundle extras = getIntent().getExtras();
String value = extras.getString(Intent.EXTRA_TEXT);
if(value!=null)
{
mUrlEditText.setText(value);
}
}
mProgressBar = findViewById(R.id.progress_bar);
mSearchButton = findViewById(R.id.search_button);
mSearchButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
try {
askForVideo(mUrlEditText.getText().toString());
mSearchButton.setVisibility(View.INVISIBLE);
mProgressBar.setVisibility(View.VISIBLE);
} catch (Exception e) {
mUrlEditText.setText("");
mUrlEditText.setHint(e.getMessage());
e.printStackTrace();
}
}
});
}
#Override
protected void onResume() {
super.onResume();
//register the ResponseReceiver
mReceiver = new ResponseReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(FETCH_VIDEO_INFO);
registerReceiver(mReceiver, intentFilter);
}
private void askForVideo (String url) throws Exception {
try {
Intent intent = FetchVideoService.newIntent(this, url);
startService(intent);
} catch (Exception e) {
mUrlEditText.setText(e.getMessage());
}
}
public class ResponseReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
int status = intent.getIntExtra(EXTRA_VIDEO_STATUS, FAIL);
mProgressBar.setVisibility(View.INVISIBLE);
mSearchButton.setVisibility(View.VISIBLE);
if(status==FAIL)
{
mUrlEditText.setText("");
mUrlEditText.setHint("Error retrieving video!");
}
else if(status==SUCCESS) {
Video video = intent.getParcelableExtra(EXTRA_VIDEO);
Intent videoActivityIntent =
VideoActivity.newIntent(getApplicationContext(), video);
startActivity(videoActivityIntent);
}
}
}
#Override
protected void onPause() {
unregisterReceiver(mReceiver);
super.onPause();
}
}
I do not think any of the other files will be useful in understanding the problem. Although this seems like something many app creators should have to deal with, I can find no answers to this problem. Please comment if you feel I should add any additional information and thank you in advance for any help!
Update: testing demonstrates that after the first use of "Share" from YouTube (and considering app remains in the background), the MainActivity no longer receives any new intent on further shares. However, my app is still brought to the foreground somehow. This is very confusing to me.

When you share from another app, your MainActivity is brought to the front and onNewIntent() is called on it. You don't override onNewIntent() so you never see the share Intent.

SplashScreen everytime I'm back on MainActivity

I'm using this code on MainActivity for a splashscreen that works perfectly
final ImageView splash1 = (ImageView) this.findViewById(R.id.splash);
new Handler().postDelayed(new Runnable(){
#Override
public void run() {
splash1.setVisibility(View.GONE);
}
}, 1000);
but everytime I'm back on MainActivity (where the main menu is), the splashScreen is there again. Is there a way to keep using this code, and just adding an if condition do not see the splashScreen after the first time?
(e.g: a variable that changes when the app loads)
Thanks in advance

Use 2 different activity SplashActivity and MainActivity.
Your "Splash" activity need to be MAIN LAUNCHER Activity. So modify the AndroidManifest file like this...
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
</activity>
<activity android:name=".Splash">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
And Jump to MainActivity from SplashActivity after few seconds.. Use this code in SplashActivity.
Handler hadler=new Handler();
hadler.postDelayed(new Runnable() {
#Override
public void run () {
finish();
Intent i = new Intent(context, MainActivity.class);
startActivity(i);
}
}, 3000);
here 3000 is used for 3 seconds. The MainActivity auto start after 3 seconds. Hope it helps.

Use separate activity for splash screen after that go for MainActivity, Don't forget to use finish() in splash screen activity.
This link may help you
http://androidexample.com/Splash_screen_-_Android_Example/index.php?view=article_discription&aid=113&aaid=135

Simply create one variable to know whether its displayed or not.
class YourActivity extends Activity {
boolean isDisplayed;
#Override
protected void onStart() {
if (!isDisplayed) {
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
isDisplayed = true;
splash1.setVisibility(View.GONE);
}
}, 1000);
} else {
splash1.setVisibility(View.GONE);
}
}
}

use finish() after starting the SplashScreen Activity

EDIT:
One more approach can be - Create a boolean application level variable (set to false) by extending Applicationclass & then checking it in the runmethod - If false then show the splash & set it to true, so that it will not execute again.
public class DefaultApplication extends Application {
private boolean isSplashDisplayed = false;
public boolean isSplashDisplayed() {
return isSplashDisplayed ;
}
public void setIsSplashDisplayed(boolean isSplashDisplayed) {
this.isSplashDisplayed = isSplashDisplayed;
}
}
Second Approach -
Its better to create a separate activity for Splash, then call MainActivity from SplashActivity & finish SplashActivity
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent i = new Intent(SplashScreen.this, MainActivity.class);
startActivity(i);
finish();
}
}, 1000);
Also need to make your SplashActivity as launcher
<activity
android:name=".SplashActivity"
android:label="#string/title_activity_splash_screen" >>
<intent-filter>
<action android:name="android.intent.action.MAIN" />>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
< /activity>

onkeyDown / onBackPressed are not working with intent?

This is a simple operation and seems to be working until I've changed my minSdk = 8 to 9 , and targetSdk remains 21 in my manifest.
Problem is that i have an activity A , and i am going to activity B when a button is pressed in activity A . Now on activity B whenever someone press back button i want to clear the activity stack and transfer my activity B to activity C . but instead it finish activity B and go to Activity A , so far i have tried onKeyDown , onBackPressed , nothing seems to work , kindly help.
Activity A (in onClick method):
Intent in = new Intent(A.this,
B.class);
in.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
startActivity(in);
[UPDATED]Activity B :
#Override
public void onBackPressed() {
Intent in = new Intent(this, C.class);
Bundle bundle = new Bundle();
bundle.putSerializable("Scores", score);
in.putExtras(bundle);
startActivity(in);
}
Activity C:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.C);
ScoreSaver scores = (ScoreSaver) getIntent().getExtras().getSerializable("Scores");
}

Add android:noHistory="true" to both Activity A and B in your manifest file. This way these activities won't be in your back stack.
In Activity B you have to override the behavior of onBackPressed().
It has to look like this:
#Override
public void onBackPressed() {
Intent intent = new Intent(this, ActivityC.class);
startActivity(intent);
}
If you leave super.onBackPressed() in your method, the default behavior will happen, i.e. Activity B will be closed and you jump back to Activity A.

Issue was with Serializable object which was using storing context which will be null in next activity , which causes exception , that crashes my activity. so i removed it everything works fine. Thanks #Chris Fox

Unfortunately I do not have a Git Account, so I post the files' content here. (The app's theme inherits from Theme.AppCompat.Light.DarkActionBar)
Manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="fox.chris.activitytest">
<application android:allowBackup="true"
android:label="#string/app_name"
android:icon="#mipmap/ic_launcher"
android:theme="#style/AppTheme">
<activity
android:name=".ActivityA"
android:noHistory="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".ActivityB"
android:noHistory="true">
</activity>
<activity android:name=".ActivityC">
</activity>
</application>
</manifest>
Activity A:
public class ActivityA extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_a);
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ActivityA.this, ActivityB.class);
startActivity(intent);
}
});
}
}
Activity B:
public class ActivityB extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_b);
}
#Override
public void onBackPressed() {
Intent intent = new Intent(this, ActivityC.class);
startActivity(intent);
}
}
Activity C:
public class ActivityC extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_c);
}
}

andengine start game from menu

I want to start a game from a menu. In Eclipse, I have 2 projects, one with the menu, the other the actual game. Both using SimpleBaseGameActivity as their base. The examples on the net do something like below. In particular, it creates an intent and starts an activity with that intent. The code below gives a NoClassDefFoundError on MyGame.class. This is no surprise since MyGame.class doesn't exist, but rather MyGame.apk does. How do I do this?
public boolean onMenuItemClicked(final MenuScene pMenuScene,
final IMenuItem pMenuItem,
final float pMenuItemLocalX,
final float pMenuItemLocalY) {
switch(pMenuItem.getID()) {
case MENU_PLAY:
MainActivity.this.runOnUiThread(new Runnable() {
public void run() {
Intent intent = new Intent(getApplication(), MyGame.class);
startActivity(intent);
finish();
}
});
return true;
}
}
----- edit
I've got it working, with everything in one project, in that when the menu item is clicked on, then the game starts. However, when the 'back arrow' is clicked, it doesn't return to the menu, but rather to the operating system. The activity definitions in the manifest file are below. Does this look correct?
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.mygame.MyGame"
android:label="#string/mygame_activity"
android:parentActivityName="com.menu.MainActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.menu.MainActivity" />
</activity>
I added this to MyGame, but it doesn't get called:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
}
--- edit
I needed to remove this line:
MainActivity.this.finish();

first insert in the Manifest in the tags
<application>...</application>
this tag:
<activity
android:name=".MyGame"
android:label="MygameName" >
</activity>
and change in your code:
public boolean onMenuItemClicked(final MenuScene pMenuScene,
final IMenuItem pMenuItem,
final float pMenuItemLocalX,
final float pMenuItemLocalY) {
switch(pMenuItem.getID()) {
case MENU_PLAY:
MainActivity.this.runOnUiThread(new Runnable() {
public void run() {
Intent intent = new Intent(MainActivity.this, MyGame.class);
startActivity(intent);
MainActivity.this.finish();
}
});
return true;

MyGame have to be an activity and it must be mentioned in Android.manifest as an activity.
http://developer.android.com/training/basics/firstapp/starting-activity.html

Please Remove call to function "finish()" and then it will take you back to the parent activity.