Develop Reference

Ordering activities in Android Manifest

Having issues trying to order the some of my activities in my application. Have implemented some ideas that I have seen on SO, but to no avail.
At the minute, my application is going SplashScreen > MainActivty. I want SplashScreen > LoginActivity > MainActivity
Any indications on where I'm going wrong would be appreciated.
Manifest
<activity
android:name="com.example.XXX.myapplication.SplashScreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.XXX.myapplication.LoginActivity"
android:parentActivityName=".SplashScreen">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.XXX.myapplication.SplashScreen" />
</activity>
<activity
android:name=".SignUpActivity" />
<activity
android:name="com.example.XXX.myapplication.MainActivity"
android:parentActivityName=".LoginActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.XXX.myapplication.LoginActivity"
android:theme="#style/Theme.AppCompat.Light.NoActionBar" />
</activity>

You don't order activities in the manifest like this. Set your splash screen to the default activity. In the Java code for splash activity start mainactivity with the startactivity method. Then in loginactivity call startactivity for mainactivity.
https://developer.android.com/training/basics/firstapp/starting-activity.html

You should do it programmatically in Java, in your SplashScreen Class, you should have something like :
startActivity(new Intent(SplashScreen.this, LoginActivity.class));
Example :
private final int SPLASH_DISPLAY_TIME = 5000;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash_screen);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent myIntent = new Intent(SplashScreen.this, LoginActivity.class);
startActivity(myIntent);
finish();
}
},SPLASH_DISPLAY_TIME);
}

Place and `Intent-filter` tag in your intended entry activity in AndroidManifest.xml file like this
```
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
```
If your initial activity is a place, start the next activity in your runnable thread as shown below.
```
new Handler().postDelayed(new Runnable(){
#Override
public void run() {
/* Create an Intent that will start the Menu-Activity. */
Intent(SplashActivity.this,ACTIVITY_TO_GO_TO.class);
startActivity(mainIntent);
finish();
}
}, TIME_OUT_NOW);
```
You can then move to anywhere else in ACTIVITY_TO_GO_TO activity.

You can not ordering Activities by Manifest
1.Your Launch page is Splash.So you can write below code in splash page
Thread timerThread = new Thread(){
public void run(){
try{
sleep(3000);
}catch(InterruptedException e){
e.printStackTrace();
}finally{
startActivity(new Intent(SplashScreenActivity.this,YourActivity.class));
finish();
}
}
};
timerThread.start();
You can write your Login Activity on plcae of YourActivity.
2.On Click Login button Ho to main Activity

Regarding splash in Android

For now, the InitialActivity is set as the main activity in the AndroidManifest.xml file.
<activity
android:name=".ui.SplashActivity"
android:noHistory="true" >
</activity>
<activity
android:name=".ui.InitialActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ui.LoginActivity"
android:noHistory="true" >
</activity>
<activity
android:name=".ui.RegisterActivity"
android:noHistory="true" >
</activity>
<activity
android:name=".ui.MainScreenActivity"
android:launchMode="singleTop">
</activity>
After finishing the registration process in the RegisterActivity, quit the application and re-start the app, I want the app to directly go to MainScreenActivity automatically logged in. So here's the part of the InitialActivity class that checks if I am logged in and goes to the MainScreenActivity if I am.
session = new SessionManager(getApplicationContext());
// check if user is already logged in.
if(session.isLoggedIn()) {
// User is already logged in. Take him to MainScreenActivity.
Intent intent = new Intent(InitialActivity.this, MainScreenActivity.class);
startActivity(intent);
finish();
} else {
startActivity(new Intent(this, SplashActivity.class));
}
So far, I managed to go directly into the MainScreenActivity with the code above, but in this case I miss the splash. How can I modify the code so that I can still see the SplashActivity even after being automatically logged in?
FYI here's the SplashActivity class code.
public class SplashActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
Handler hd = new Handler();
hd.postDelayed(new Runnable() {
#Override
public void run() {
finish();
}
}, 1500);
}
}

I will use the splashActivity as the launcher activity (it will be launch every time) and I will check in this activity if user is logged or not, depending on the response launch the RegisterActivity or the mainActivity

Intent in Timer Task causes force close

So I'm writing an app which, when plugged in, is supposed to launch an activity telling the user to unplug the device from a computer. In this class, I have a timer which periodically checks to see if it is plugged in. The code in the timer works other than when I try to start another activity when the user disconnects the cord. I am not sure if the issue lies in the class with the timer, or the Manifest, although the activity which I am trying to launch when disconnect was working earlier and I haven't made any changes to it.
Here is the code for the StateCheck class (tests whether its plugged in by checking the state of the SD card):
public class StateCheck extends Activity {
TextView stateCheck, unmountedImage, tester;
Timer timer;
int i = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.state_check);
stateCheck = (TextView) findViewById(R.id.tvStateCheck);
unmountedImage = (TextView) findViewById(R.id.tvUnmountedImage);
tester = (TextView) findViewById(R.id.tvTester);
//Intent openStartingPoint = new Intent("com.flannigan.MUSERCISEACTIVITY");
//startActivity(openStartingPoint);
MyTimerTask myTask = new MyTimerTask();
timer = new Timer();
timer.schedule(myTask, 1000);
}
class MyTimerTask extends TimerTask {
public void run() {
String state = Environment.getExternalStorageState();
i++;
if (Environment.MEDIA_MOUNTED.equals(state)) {
unmountedImage.getHandler().post(new Runnable() {
public void run() {
unmountedImage.setVisibility(View.INVISIBLE);
}
});
stateCheck.getHandler().post(new Runnable() {
public void run() {
stateCheck.setText("SD card is mounted!\nLoading...");
}
});
Intent openStartingPoint = new Intent("com.flannigan.MUSERCISEACTIVITY");
startActivity(openStartingPoint);
} else {
MyTimerTask myTask = new MyTimerTask();
timer = new Timer();
timer.schedule(myTask, 1000);
tester.getHandler().post(new Runnable() {
public void run() {
tester.setText(""+i);
}
});
}
}
}
}
Manifest:
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name" >
<activity
android:name=".Splash"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".StateCheck"
android:label="Musercise"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="com.flannigan.STATECHECK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".MuserciseActivity"
android:label="Musercise"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="com.flannigan.MUSERCISEACTIVITY" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>

Use runOnUiThread for Accessing UI elements from TimerTask Thread as:
StateCheck.this.runOnUiThread(new Runnable() {
public void run(){
// start next Activity here
// Access UI element here
}
});
and for Starting Activity Change your Intent as:
Intent intent=new (StateCheck.this,MuserciseActivity.class);
startActivity(intent);

I am having issue with my splash screen as am not getting into the next activity

This is an example of splash screen but facing difficulty with it as I couldn't view my MainActivity class, couldn't be able to recognize the issue.Tried in manifest file by changing the action and the category name as well but could not be able to resolve to it.
Basically changed my Intent intent = new Intent(); as well but still the same goes on.
public class SplashActivity extends Activity
{
MediaPlayer player;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
player = MediaPlayer.create(SplashActivity.this, R.raw.splash);
player.start();
Thread timer = new Thread()
{
#Override
public void run()
{
try
{
sleep(4000);
}catch(InterruptedException e)
{
e.printStackTrace();
}
finish();
Intent intent = new Intent();
intent.setClass(SplashActivity.this, MainActivity.class);
startActivity(intent);
stop();
}
};
timer.start();
}
#Override
protected void onPause()
{
super.onPause();
player.release();
finish();
}
}
====>And here is my manifest file --
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mainsplashcreen"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="#drawable/android_splash"
android:label="#string/app_name" >
<activity
android:name=".MainActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".SplashActivity"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

I would guess, that your problem is, that you finish your activity before you start the new one. If you call finish() on your activity, it will be destroyed, and so the startActivity() won't be called anymore (or if it will be called, it won't get a valid context anymore). So try to move the finish() method, at the end of your run method, that should solve the problem.

Another Very Short,Simple and Effective way of Implementing Flash Screen is as below:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
Handler handler=new Handler();
Runnable gotoMain=new Runnable() {
public void run()
{
startActivity(new Intent(SplashActivity.this, MainActivity.class));
finish();
}
};
handler.postDelayed(gotoMain, 4000);
}
You just Replace you OnCreate Method with this one.

There are a few things which you should take care of:
1. The usage of stop() and the place it is being used are not encouraged. Besides being deprecated, it will also give you UnsupportedOperationExcecption.
2. Is your MediaPlayer being initialized correctly without any errors? Check the logs.
3. What is the reason you are using finish() in onPause() method? It is not recommended.
4. You are assigning MAIN action to both your activities. While it is allowed, it should be for a specific reason.
However, all these things should not avoid your application to go to the main activity. There may be the reasons with your main activity code.

Splash screen only shows after clean install

I have made a splash screen with an Activity. I followed following example http://www.anddev.org/viewtopic.php?t=815 and it works perfectly when installed. But that's where my problem starts. It only shows after an install. So When I kill my app, the Activity isn't loaded anymore, it directly loads my second Activity. I think it's a little weird, because I set the intent-filter in my manifestfile on the splash screen.
Anyone knows how to solve this problem?
This is my manifestfile:
<application android:icon="#drawable/icon" android:label="#string/app_name"
android:theme="#style/MyLightTheme.NoShadow" android:debuggable="true" android:name="android.app.Application" >
<uses-library android:name="com.google.android.maps" />
<activity android:name=".MainActivity" android:label="#string/app_name"></activity>
<activity android:name="FindJob" android:label="#string/FindJobTitel"></activity>
<activity android:name="JobDetails" android:label="#string/MaatTitel" ></activity>
.
.
.
<activity android:name="Splash" android:configChanges="orientation" android:label="#string/Splash">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter></activity>
</application>
Splashscreencode:
private final int SPLASH_DISPLAY_LENGHT = 5000;
//private Drawable drawable;
private ProgressBar mProgress;
private int mProgressStatus = 0;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.splash);
mProgress = (ProgressBar) findViewById(R.id.progressBar1);
}
public void onStart(){
super.onStart();
//Log.i("START", "In on start");
Thread splashThread = new Thread() {
#Override
public void run() {
try {
int waited = 0;
while (mProgressStatus < 100) {
sleep(80);
//waited += 200;
mProgressStatus += 4;
mProgress.setProgress(mProgressStatus);
}
} catch (InterruptedException e) {
// do nothing
} finally {
finish();
Intent i = new Intent(Splash.this, MainActivity.class);
startActivity(i);
}
}
};
splashThread.start();
}
UPDATE: placing android:noHistory="true" in the mainActivity in ManifestFile solves the problem. HOWEVER. Each time I leave the app, it restarts all of it (splash screen, mainactivity and not last activity loaded). But it's better then before.