So I am redoing my app so that there will be an animation on the start screen of the app. The only problem is it seems you cannot start an app with a view class. At least I'm not really sure if you can. Here is my code. With this code i get a launcher activity not found in the console?
public class SplashLaunch extends Activity{
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.splashlaunch);
final Main d = new Main(this);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
setContentView(d);
}
}, 5000);
}
}
Here is the manifest file. I have a feeling that I'm going to need to change this.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Tripps.thesimplegame"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="12"
android:targetSdkVersion="22" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".SplashLaunch"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.SPLASHLAUNCH" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".YouFailed"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.YOUFAILED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
Likely somewhere in your launcher activity you have an onCreate method:
public class YourActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.foobar);
}
}
Just change the setContentView to your custom view:
public class YourActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
MyCustomView view = new MyCustomView(this);
setContentView(view);
}
}
The Activity that you want to start when the app first starts MUST have the following Intent filter:
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
Related
i'm a student and i'm working on a mobile app.
The probleme is that my app was working, but now when i click on the button to open another window it closes.
Here is my code:
`
public class MainActivity extends AppCompatActivity {
Button b_inscrire_etudiant;
Button b_inscrire_enseignant;
Button b_inscrire_admin;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b_inscrire_etudiant = findViewById(R.id.b_inscrire_etudiant);
b_inscrire_enseignant = findViewById(R.id.b_inscrire_enseignat);
b_inscrire_admin = findViewById(R.id.b_inscrire_admin);
b_inscrire_etudiant.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this , InscriptionEtudiant.class);
startActivity(i);
}
});
b_inscrire_enseignant.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this , InscriptionEnseignant.class);
startActivity(i);
}
});
b_inscrire_admin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(MainActivity.this , InscriptionAdmin.class);
startActivity(i);
}
});
}
}
`
I worked as usual "using Intent" besides it worked well until now.
Here is my Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.myusto">
<application
android:allowBackup="true"
android:dataExtractionRules="#xml/data_extraction_rules"
android:fullBackupContent="#xml/backup_rules"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MyUsto"
tools:targetApi="31">
<activity
android:name=".InscriptionEnseignant"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".InscriptionEtudiant"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".InscriptionAdmin"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".Connexion"
android:exported="false">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>
ps: I solved the problem, by the way two were missing
Thank you for the answers.
It's true, it was missing a part of the code which was not written in the manifest file
this is my manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.openboot">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<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">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".StartAppOnBoot" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
</application>
</manifest>
My BroadcastReceiver that "receives" the boot completed intent:
public class StartAppOnBoot extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Intent i = new Intent(context, MainActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
My MainActivity that I need to open:
public class MainActivity extends AppCompatActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
I need MainActivity to open when the phone turns on, but I don't see the way to do it.
public class MainActivity extends AppCompatActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new
Intent(getApplicationContext,StartAppOnBoot.class);
sendBroadcast(intent);
}
reference
https://developer.android.com/guide/components/broadcasts#java
Is it possible to open a FragmentActivity after Splash screen?
I want to open the FragmentActivity / Fragment after the Splash screen but I get following Error:
Unable to find explicit activity class {com.**********.MainActivity};
have you declared this activity in your AndroidManifest.xml?
My splash screen:
public class SplashScreen extends Activity {
private final int SPLASH_DISPLAY_LENGTH = 3000;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.activity_splash);
new Handler().postDelayed(new Runnable(){
#Override
public void run() {
Intent mainIntent = new Intent(SplashScreen.this,Juli.class);
SplashScreen.this.startActivity(mainIntent);
SplashScreen.this.finish();
}
}, SPLASH_DISPLAY_LENGTH);
}
}
Manifest:
<activity
android:name="com.test.tab.SplashScreen"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
In Manifest add:
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<!-- Splash screen -->
<activity
android:name="com.test.tab.SplashScreen"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Main activity -->
<activity
android:name="com.test.tab.Juli"
android:label="#string/app_name" >
</activity>
</application>
I want to run an implicitly tried with the following code:
MenuActivity.java
public class MenuActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
Button btn = (Button) findViewById(R.id.btnVideo);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri intentUri = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.pp);
intent.setDataAndType(intentUri,"audio/mp3");
startActivity(intent);
}
});
}
}
AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<application
android:allowBackup="true"
android:icon="#drawable/iconopp14"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.powerpump.MainActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MenuActivity" />
</application>
You need to specify more parameters in AndroidManifest.xml?
Thanks.
I guess you simply have to register your MenuActivity in you AndroidManifest.xml as demonstrated here.
Looking at your code, it looks like you created a MenuActivity class after creating an android project with default settings and MenuActivity is your main activity(Launcher) class.
Just replace the MainActivity with MenuActivity in your AndroidManifest.xml file and delete
<activity android:name=".MenuActivity" />
OR
Replace the class name to MainActivity from MenuActivity in your java code as follows
public class MainActivity extends Activity {
......
OR
use this as your android manifest.xml file
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<application
android:allowBackup="true"
android:icon="#drawable/iconopp14"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity android:name="com.powerpump.MenuActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
I am a beginner of Android and i need a bit hints and help. I am using following code
public class WifiHotSpotActivity extends Activity {
private Button adnew = null;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
adnew = (Button) findViewById(R.id.addNewBtn);
adnew.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
Intent myIntent = new Intent(v.getContext(), addNew.class);
startActivityForResult(myIntent, 0);
}
});
}
The error i am receiving is
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.kahaf.wifiHotSpot/com.kahaf.wifiHotSpot.addNew}; have you declared this activity in your AndroidManifest.xml?
if anyone can tell me what is the problem.
You should define your activity in the manifest file. Here's an example how your manifest should look after the addition of that activity:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.foo.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="7" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
>
<activity
android:label="#string/app_name"
android:name=".FooActivity"
android:configChanges="keyboardHidden">"
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".YourActivityNameHere"
android:label="#string/app_name"
>
</activity>
<activity
android:name=".AnotherActivity"
android:label="#string/app_name"
>
</activity>
</application>
</manifest>
put this to AndroidManifest.xml
<activity android:name=".WifiHotSpotActivity"/>
It looks like you've not defined the Activity Element in the manifest xml for WifiHotSpotActivity. Without this you will be unable to launch this activity.
go to manifest the application tag.. add activity "addNew" which you are calling in button click..