I'm trying to make an intent from a xml fragment :
<PreferenceScreen android:key="Admin" android:title="#string/prefTitleAdminApp" android:summary="#string/prefSumAdminApp">
<intent android:action="android.intent.action.ADD_DEVICE_ADMIN" />
</PreferenceScreen>
while having this in the manifest :
<receiver android:name="my.package.ARL.elements.AdminDevice"
android:label="ARL"
android:permission="android.permission.BIND_DEVICE_ADMIN">
<meta-data android:name="android.app.device_admin" android:resource="#xml/admin" />
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
<action android:name="android.intent.action.ADD_DEVICE_ADMIN" />
</intent-filter>
</receiver>
When i click, i'm having a force close with the "No activity found to handle Intent { act=android.intent.action.ADD_DEVICE_ADMIN }
Where Am i wrong ? Is that possible (for device admin) ?
Is it possible to add the "extra" like this ? :
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,adminName);
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,getString(R.string.adminRights));
startActivityForResult(intent, 0);
But in xml format ? (didn't find the extra in the doc, there is only the data that look close)
Thanx
Edit: I found that it wasn't android.intent.action.ADD_DEVICE_ADMIN but DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN.
But it seems that calling such intent don't work from xml, this is still working :
Intent intent = new Intent(DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,"ARL");
intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,getString(R.string.adminRights));
startActivityForResult(intent, 0);
If you have an idea on how to call such intent from xml, it would be great,
Related
I have added a deep link to my app which maps an activity to a particular web page on my website (Link referred: https://developer.android.com/training/app-links/deep-linking ).
While handling the deep link in my Java code, getAction() and getData() methods give me null value.
I tried testing it here: https://firebase.google.com/docs/app-indexing/android/test (This gave me perfect result) But the same link opens in A web browser rather than in my app when clicked.
Android Manifest code :
<activity
android:name=".MainActivity"
android:screenOrientation="portrait"
android:launchMode="singleTask"
android:exported="true">
<tools:validation testUrl="https://www.mywebsite.com/xyz" />
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:scheme="https"
android:host="www.mywebsite.com"
android:pathPrefix="/xyz" />
</intent-filter>
</activity>
Java Code :
Intent intent = getIntent();
String action = intent.getAction(); // getting null value here
Uri data = intent.getData(); // getting null value here
I want that if the app is present, then it should be opened when the link is clicked or else the link will open the web page.
Where and what am I missing?
You can run into this problem because using singleTask. In that case you should use onNewIntent to 'update' intent, because onCreate and onResume will not handle it.
This is called for activities that set launchMode to "singleTop" in their package, or if a client used the Intent#FLAG_ACTIVITY_SINGLE_TOP flag when calling startActivity(Intent). In either case, when the activity is re-launched while at the top of the activity stack instead of a new instance of the activity being started, onNewIntent() will be called on the existing instance with the Intent that was used to re-launch it.
override fun onNewIntent(intent: Intent?) {
super.onNewIntent(intent)
//TODO: do something with new intent
}
instead of getting intent data in onCreate, get in onResume
#Override
protected void onResume() {
super.onResume();
Intent intent = getIntent();
if (intent != null && intent.getData() != null ){
Toast.makeText(this, intent.getData().toString(), Toast.LENGTH_SHORT).show();
webView.loadUrl(intent.getData().toString());
}
}
add these lines of code which activity is attached for deep linking to open your website page
and mark it as a answer if it helped you to solve your problem
I get error No Activity found to handle Intent when I try to start Default Activity from another Activity using
Intent start = new Intent("com.name.name.MainActivity");
startActivity(start);
finish();
I guess this is because in AndroidManifest for Default Activity I have android.intent.action.MAIN
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
Is there a way to start Default Activity from another Activity when Default Activity is finished before?
You are trying to start the activity using the action name..
Note:startActivity() always adds CATEGORY_DEFAULT to an Intent if there is no other category specified(Here you have no category specified in your internt so its default).
Hence, an <intent-filter> for an <activity> always needs a <category>, whether DEFAULT or something else (here it needs default that's why error says No Activity found to handle Intent for Default Activity)
The LAUNCHER category says that this entry point should be listed in the application launcher.
The DEFAULT category is required for the Context.startActivity() method to resolve your activity when its component name is not explicitly specified.
Try to specify two intent filters:
<activity android:name=".MyActivity"
android:configChanges="orientation|keyboardHidden"
android:windowSoftInputMode="stateHidden"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="com.name.name.MainActivity"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
Then you can start the activity using the action name:
Intent intent = new Intent("com.name.name.MainActivity");
startActivity(intent);
or simply you can go with the class name:
Intent intent = new Intent(context, MainActivity.class);
startActivity(intent);
Intent i = new Intent(otheractivity.this, MainActivity.class);
startActivity(i);
Ugh, so many posts on StackOverflow similar to my problem but none fix it :/
I am currently learning android development. In my main activity I do:
public boolean onOptionsItemSelected(MenuItem item) {
super.onOptionsItemSelected(item);
switch(item.getItemId()){
case R.id.changeName:
Intent intent = new Intent(this, PreferenceActivity.class);
startActivityForResult(intent, 1);
return true;
}
return false;
}
Preference.java is a freshly created activity with nothing in it except the automatically created onCreate method. The error is:
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.package.chat.oneway.client/android.preference.PreferenceActivity}; have you declared this activity in your AndroidManifest.xml?
My android manifest has:
<application
android:allowBackup="false"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name">
<activity
android:name=".ChatClient"
android:label="#string/app_name" />
<activity android:name=".Parent">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".PreferenceActivity"></activity>
</application>
As you can see, .PreferenceActivity is in the manifest. The packages for the ChatClient and PreferenceActivity activities are the same com.package.chat.oneway.client package.It's been driving me nuts for the past 4 hours.
As you can see, .PreferenceActivity is in the manifest.
Yes, it is. However, that is not what your Intent is using. If you look more closely at the error message, you will see that your Intent is using android.preference.PreferenceActivity.
This comes when you reuse existing class names. There are countless possible class names. Rename yours to something else, and you can avoid this sort of problem in the future.
Or, if you are completely set on having your class named PreferenceActivity, then remove the import android.preference.PreferenceActivity statement from the class where you are creating your Intent. Or, change your Intent to:
Intent intent = new Intent(this, com.package.chat.oneway.client.PreferenceActivity.class);
I noticed that there are two ways to start an Activity with Intent.
1) Using - [android:name=".MainActivity"]
Intent intent = new Intent(context, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
2) Using - [action android:name="com.example.MainActivity"] from the Intent_Filter
String actionName = "com.example.MainActivity";
Intent intent = new Intent();
intent.setAction(CUSTOM_ACTION);
context.startActivity(i);
So what's the difference? Why do we have to set both the name and the intent_filter in the manifest if they both do the same thing?
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Second confusion I have is... Is there a way to use the "OK Google" voice-launch option to launch an Activity that's NOT shown in the app list? Basically actual App Launcher launches the "default homepage" of the app, whereas voice launch takes you to a specific Activity directly?
I suspect some combo of these might get it done:
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.HOME" />
<category android:name="android.intent.category.DEFAULT" />
If your class is in your main package, you can use this way:
.YourClass
or
com.example.YourClass
If your class isn't in your main package, you should use this way:
packagename.YourClass
I want to know if it is possible to read the value of android:scheme from the Android-manifest-file (example below) programmatically.
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="zxtest" />
</intent-filter>
You should be able to get this information from the PackageManager:
PackageManager pm = getPackageManager();
ActivityInfo activityInfo = pm.getActivityInfo(component,
PackageManager.GET_INTENT_FILTERS);
Unfortunately, however, you can't :-( This call SHOULD return the intent filters (according to the documentation), but it seems that the Android developers haven't gotten around to actually implementing it yet :-(
See Unable to get intent filters from a package
I'm assuming you mean that the intent has been called and you're trying to find the scheme from your activity's code?
In your activity's onCreate method, you can do the following:
Intent intent = getIntent();
Uri data = intent.getData();
String scheme = data.getScheme(); // "zxtest"