Before my application was working fine. I just created a new class (within the same package) and also declared it in the manifest, still I get a ActivityNotFoundException and sometimes NoClassDefFoundException.
TestActivity.java
public class TestActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.order_summary);
}
}
Activity_NewOrder.java
public class Activity_NewOrder extends Activity
try {
//Also tried Intent intent = new Intent(Activity_NewOrder.this, TestActivity.class);
Intent intent = new Intent(getApplicationContext(), TestActivity.class);
startActivity(intent);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
}
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mypackage">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".Activities.Activity_OrderSummaryNew"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape" />
<activity
android:name=".Activities.Activity_Login"
android:configChanges="orientation"
android:screenOrientation="landscape">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Activities.Activity_Orders"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape" />
<activity
android:name=".Activities.Activity_NewOrder"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape" />
<activity
android:name=".Activities.Activity_OrderHistory"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape" />
<activity android:name=".Activities.TestActivity" />
</application>
</manifest>
Related
I'm trying to use onConfigurationChanged to detect screen rotation.
Activity
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public void onConfigurationChanged(#NonNull Configuration newConfig) {
super.onConfigurationChanged(newConfig);
Toast.makeText(getApplicationContext(), "Screen is rotated!", Toast.LENGTH_SHORT).show();
Log.i("ROTATEAPP", "Screen is rotated...");
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<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.ScreenRotate"
tools:targetApi="31">
<activity
android:name=".MainActivity"
android:configChanges="orientation"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
</application>
</manifest>
I rotated the device (Pixel 3 running Android 12) a few times, and didn't see any Toast or log entry. What's wrong here?
In this project I tried to make an animated splash screen which will appear before going to the main activity, but after I execute, the splash screen does not appear but instead goes directly to the main activity.
how to fix this?
this is my splash activity class
private ImageView container;
private AnimationDrawable animationDrawable;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash)
container = findViewById(R.id.iv_icons);
container.setBackgroundResource(R.drawable.mysplash_animation);
animationDrawable = (AnimationDrawable) container.getBackground();
}
#Override
protected void onResume() {
super.onResume();
animationDrawable.start();
checkAnimationStatus(50, animationDrawable);
}
private void checkAnimationStatus(final int time, final AnimationDrawable animationDrawable) {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
if (animationDrawable.getCurrent() != animationDrawable.getFrame(animationDrawable.getNumberOfFrames() - 1))
checkAnimationStatus(time, animationDrawable);
else finish();
}
}, time);
}
}
and this is my manifest.xml
<application
android:allowBackup="true"
android:exported="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<activity android:name=".SplashActivity"></activity>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
You have to change this in your manifest(you have to give launcher activity to splashActivity)
<application
android:allowBackup="true"
android:exported="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<activity android:name=".SplashActivity">
// below code you have to add //
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity">
//Remove from here//
</activity>
</application>
Set your Splash Activity as the Launcher activity:
<activity android:name=".MainActivity"></activity>
<activity android:name=".SplashActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
Please provide intentfilter to SplashActivity
<application
android:allowBackup="true"
android:exported="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<activity android:name=".SplashActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MainActivity">
</activity>
</application>
when i write this code why the color of mFacebookCallbackManager changes to red saying cannot resolve symbol mFacebookCallbackManager
public class signin extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FacebookSdk.sdkInitialize(getApplicationContext());
mFacebookCallbackManager = CallbackManager.Factory.create();
setContentView(R.layout.activity_signin);
}
}
Manifest File
<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">
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="#string/facebook_app_id"/>
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Kindly help me out to solve the problem
You did not declare the variable mFacebookCallbackManager.
public class ListViewActivity extends AppCompatActivity
{
ListView lv;
String[] ListItems={"AutoCompleteTextViewActivity","CheckboxActivity","EditTextActivity","ListViewActivity","ProgressBarActivity","RadioButtonActivity","RatingBar2Activity","RatngBarActivity","SeekBarActivity","SpinnerActivity","SwitchActivity","TextViewActivity"};
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_view);
lv=(ListView)findViewById(R.id.listView1);
ArrayAdapter ad=new ArrayAdapter(ListViewActivity.this,android.R.layout.simple_list_item_1,ListItems);
lv.setAdapter(ad);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Intent i = new Intent(ListViewActivity.this, ListItems[position].getClass());
startActivity(i);
}
});
}
}
i am current learning android studio.i made an app through which i can open my previously created apps by choosing them from a listview widget.it shows an error in the intent line.please tell me where i've have gone wrong.
MY MANIFEST FILE
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.user.re1">
<application
android:allowBackup="true"
android:banner="#mipmap/ic_launcher_round"
android:icon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".TextViewActivity" />
<activity android:name=".EditTextActivity" />
<activity android:name=".RadioButtonActivity" />
<activity android:name=".CheckboxActivity" />
<activity android:name=".RatngBarActivity" />
<activity android:name=".RatingBar2Activity" />
<activity android:name=".ProgressBarActivity" />
<activity android:name=".SeekBarActivity" />
<activity android:name=".SwitchActivity" />
<activity android:name=".SpinnerActivity"/>
<activity android:name=".AutoCompleteTextViewActivity">
</activity>
<activity android:name=".ListViewActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Add your activity name to your manifest file
<activity android:name=".ListViewActivity"></activity>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.exampl.fitindya"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
android:targetSdkVersion="20" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<!-- Entry for RegisterActivity.class -->
<activity android:name=".RegisterActivity"
android:label="Register New Account"></activity>
</application>
Don't know why this error is appearing and application crashes. please help guys.can there be any problem anywhere else
here is my class file
public class MainActivity extends ActionBarActivity {
Button login_b1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(), RegisterActivity.class);
startActivity(i);
}
});
}
}
Place this code below the register Activity. I guess that should be the error
<intent-filter>
<action android:name="android.intent.action.DEFAULT" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>