Permission Denial: start Intent - android

In my app, I have to use Intent.setClassName or setComponent to start an activity in another package. There is no problem when I use Intent.setClass like
Intent intent = new Intent(getApplicationContext(), org.iustb.knowledebase.animation.transparent.MainTransparentActivity.class);
The suggestions to solve this problem on the web is that adding or android:exported="true" to the target activity in the AndroidManifest, but it doesn't work.
Is there anybody can help me?
i wrote the below code:
Intent intent = new Intent();
intent.setClassName(cursor.getString(pIndex), cursor.getString(cIndex));
startActivity(intent);
manifest file settings of the target activity:
<activity android:name="org.iustb.knowledebase.animation.transparent.MainTransparentActivity"
android:exported="true"></activity>


Did you make sure the values that the cursor returns the are correct ones?
The first parameter of the setClassName() should be the application package name, not the package where the Activity beings started is.
Assume the application package is: com.testandroid, but you want to start the other activity from the com.testandroid.other package, then your code should look like this:
intent.setClassName("com.testandroid", "com.testandroid.other.OtherActivity");


in my case it was a conflict between package=com.example.myApplication in the AndroidManifest.xml file under the <manifest> tag and applicationId in the build.gradle:app module under the defaultConfig tag. hope it would help.

Related

Start another app activity removing it from recents list

I'm trying to start an activity of an app (that is not mine and which code I don't know and/or can't edit), from my app.
What I want to do, is that after starting that activity (let's call it OtherAppActivity) neither my activity (let's call it MyAppActivity) nor OtherAppActivity remain shown in the recent apps list.
My current code:
AndroidManifest.xml
<activity
android:name=".activities.Launch"
android:noHistory="true"
android:exported="true"
android:excludeFromRecents="true"
android:launchMode="singleInstance"
android:theme="#style/EmptyActivity">
MyAppActivity.java
// Intent to launch OtherAppActivity
Intent intent = new Intent();
intent.setClassName(PKG, ACTIVITY);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivityForResult(intent, 88);
I have done a lot of search, but none of the answers I have found, have worked for me.
I hope you understand what I want to do, and can help me. Thanks in advance.

For your app, try adding android:excludeFromRecents="true" to your application tag in the manifest file and for the intent try setting this flag:
intent.setFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);

How to find out the reason why Activity doesn't start

I got log cat message from startAnotherActivity() method
private void startAnotherActivity() {
Log.i(TAG, "Entered startAnotherActivity()");
Intent intent = new Intent();
intent.setAction(ANOTHER_ACTIVITY);
intent.addCategory("android.intent.category.DEFAULT");
startActivity(intent);
}
Another activity doesn't start, no other messages in log cat.
How can I resolve this issue?
UPDATE#1:
Sorry, I forgot to mention that AnotherActivity is an Activity in the other application, and therefore ANOTHER_ACTIVITY == 'some.other.app.domain.ANOTHER_ACTIVITY'
Shouldn't Dalvik complain if it cannot find specified activity?

One possible reason may be not declaring other activity in the manifest. You can do this like the following:
<activity android:name="your.package.your.activity">
</activity>
And then you can start the activity by doing the following:
Intent intent = new Intent(CurrentActivity.this, NewActivity.class);
startActivity(intent);
Hope this helps.

Since it's an activity in another application, you may need to set the component (fully qualified package name and fully qualified activity name).
See here: How to start activity in another application?
Or here:
Launch an application from another application on Android

Finally I found out my mistake.
In the project there are two similar messages in two activities, so I thought that runs one, but that was another.
Thank you for your assistance!

Start service in another package without Intent filter

Is there a way to start an Android Service defined in another package without using the Intent-Filter tag in the manifest file? For some reason I would not be able to update the manifest file of the app that contains the Service.

If you know the exact package name and service name you can create an Intent with that. The service still needs to be declared in the other manifest though.
Intent intent = new Intent();
intent.setClassName("com.example.otherapplication", "com.example.otherapplication.ServiceName");
startService(intent);

Using an Android library project Activity within another project

I have an Android library project that I would like to use from within another Android project.
The library has a Activity declared in its AndroidManifest. When I try the following within the second project:
Intent intent = new Intent(this, ReaderActivity.class);
startActivity(intent);
I get the following exception:
java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.digitalpages.reader.demo/br.com.digitalpages.reader.demo.ReaderDemoActivity}: android.content.ActivityNotFoundException: Unable to find explicit activity class {br.com.digitalpages.reader.demo/br.com.digitalpages.reader.ReaderActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
...
Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {br.com.digitalpages.reader.demo/br.com.digitalpages.reader.ReaderActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
...
How can I open the Activity from the another project?
EDIT:
By users answers I added the following line into my second project
<uses-library android:name="br.com.digitalpages.reader" android:required="true" />
But it's still doesn't works

I believe you must include the <activity> in your own AndroidManifest.xml -- I don't think it gets picked up from a library. I don't have my reference for that handy.
Update: It's official solution. From the doc:
Declaring library components in the manifest file
In the manifest file of the application project, you must add
declarations of all components that the application will use that are
imported from a library project. For example, you must declare any
<activity>, <service>, <receiver>, <provider>, and so on, as well as
<permission>, <uses-library>, and similar elements.
Declarations should reference the library components by their
fully-qualified package names, where appropriate.

Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
intent.setComponent(new ComponentName("packagename//ex-com.hello",
"classname//ex-com.hello.ExampleActivity"));
startActivity(intent);
And make sure in library you have declared the activities. You don't need to declare the library activities in your current project's manifest.

did you add to the manifest?
http://developer.android.com/guide/topics/manifest/uses-library-element.html

This works:
In your library, put your custom Activity:
public class MyLibraryActivity extends ListActivity { ... }
No need to put it into a manifest.
In your calling Android project, create an empty (dummy) wrapper:
public class MyActivity extends MyLibraryActivity { }
and add reference to this class to your manifest:
<activity android:name="my_package.MyActivity" ... />

I am aware that the question is quite old but I think this might help people like me that came up with the same problem.
Using Eclipse, the best way to share code and activities among libraries is probably the one that can be found in the android documentation here:
Managing Projects from Eclipse with ADT

When using an activity inside the library, the activity should be declared only inside the manifest of library.
The activity can be started from the main app like this:
Intent intent = new Intent();
intent.setClassName(this, "com.duna.remotelocklibrary.activities.MainRemoteActivity");
startActivity(intent);
I tried to start the library's activity like the following code, but i warn you: it doesn't work
Intent intent = new Intent();
intent.setClassName("com.duna.remotelocklibrary", "com.duna.remotelocklibrary.activities.MainRemoteActivity");
startActivity(intent);

you should import just the code of the activity ( not the manifest too ) , and then , declare your Activity ( of the library ) , in the manifest of your second project

You don't need to explicitly add activity in your main project's manifest if you have already added the activity in your library's manifest by using the following code when starting library's activity.
For Kotlin
val myIntent = Intent(activityContext, ActivityToLaunch::class.java)
// Needed to set component to remove explicit activity entry in application's manifest
myIntent.component = ComponentName(activityContext, PickerActivity::class.java)
activityContext.startActivity(myIntent, PICKER_REQUEST_CODE)
For Java
Intent myIntent = new Intent(activityContext, PickerActivity.class);
// Needed to set component to remove explicit activity entry in application's manifest
final ComponentName component = new ComponentName(activityContext, PickerActivity.class);
myIntent.setComponent(component);
activityContext.startActivity(myIntent, REQUEST_CODE);

How to link two activities in Android project

I just want to code for splashscreen. for that I used intent but I am getting error that instrumention source not found. I have two files splashscreen.java and myapps.java where I have use threading concept and called anothe activity as
finally
{
finish();
startActivity(new Intent("com.example.MyApps"));
stop();
}
# startAcitivy I am getting axception please guide me do I have to modify androidmanifest file? if yes please provide me syntax for that.

If you're starting a new Activity with intent, I prefer using it like:
Intent intent = new Intent(MyClass.this, MyApps.class);
startActivity(intent);
and have proper entry on your manifest for your MyApps class like:
<application>
.......
.....
<activity android:name="com.example.MyApps" />
........
</application>

Add
<activity android:name="com.example.MyApps"></activity>
in your manifest.

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