I have searched ALOT now, i cant find a solid way to run apps like calendar, camera, facebook, twitter, insatgram, and all kinds of apps in android. I know that i need to use intents, but HOW can i do it? I really need help! Please help me and thanks alot!
There is no such concept in Android as "run apps". You start activities. Talented developers do not focus on specific apps (e.g., "facebook, twitter, insatgram"), because those apps may not exist on any given device. Instead, you focus on generic capabilities (e.g., use an ACTION_SEND Intent with startActivity() to share something, create a launcher by using PackageManager to find those activities that support ACTION_MAIN and CATEGORY_HOME).
If you want to launch some other application from your android application then you should know the package name for that particular application For example for launching facebook use
Intent intent = new Intent("android.intent.category.LAUNCHER");
intent.setClassName("com.facebook.katana", "com.facebook.katana.LoginActivity");
startActivity(intent);
Otherwise this can also be used
Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.package.address");
startActivity(LaunchIntent);
If you want to launch the default android applications installed for some particular kind of operation then you can use implicit intents for that. For example to start a browser you can use
Uri webpage = Uri.parse("http://www.android.com");
Intent webIntent = new Intent(Intent.ACTION_VIEW, webpage);
startActivity(intent);
You should take also take a look at intents and intent filters and how to allow other apps to open your application.
Related
I need to trigger an uninstall of a certain app from within my own app. The only thing i have is the apps apk, even tho it doesn't have to be the same version as the installed app.
The uninstall would be handled by android of course. Just like installing an app from a given apk file.
Is there a way how i can put together an intent to make android open the responsible system service and and ask the user to uninstall or something like that?
The app to be uninstalled can change, so i can't use a constant packagename or something like that.
Is there some way to do this? I know you can extract the packagename from an apk, but it seems like a lot of work and probably overkill.
Using Intent.ACTION_DELETE intent
Intent intent = new Intent(Intent.ACTION_DELETE);
intent.setData(Uri.parse("package:com.example.mypackage"));
startActivity(intent);
You can get your own package name from context;
getApplicationContext().getPackageName();
I have the need to open android's default screen settings, and previously I wanted to open android's default alarm configuration activity, in the future I'm thinking I would want to open GPS settings.
How can I get the information needed to start this activities?
Where can I found the documentation about this?
What's the process for getting this information without googling for the specific activity?
Check the Common Intents listing in the documentation.
It's a pretty comprehensive listing of the actions, URI formats and MIME types for building Intents for the standard Android applications.
There is a list of Actions in the documentation listed here.
You can launch any of the sub activities in the settings app using something like:
startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
I have struck an idea of creating an app that automatically installs all the .apk packages placed inside a particular folder. In context to this, I want to learn how do I programmatically access installer service ?
Please enlighten me in this regard.
Your best bet would be to set an intent with type application/vnd.android.package-archive and then start installer activity:
Intent promptInstall = new Intent(Intent.ACTION_VIEW)
.setDataAndType(Uri.parse("file:///path/to/your.apk"),
"application/vnd.android.package-archive");
startActivity(promptInstall);
Check out Install Application programmatically on Android
Also, note, that for security reasons, you cannot install an apk 'silently' or automatically without user agreement. Therefore, the best you can do is like above.
I want to open another app and open a specific page in it!
in their guide they said to use the bellow for default action
android.intent.action.VIEW
and use a kind of intent, which didn't get which, like bellow to go to that specific page:
somecompany://details?id=com.example.calendar
but i don't know how!
And i tryed a ton of solutions but coudn't do it !
Thanks for your help.
I think this is what you're asking for. This will open a specific app's page in the Google Play store.
startActivity(new Intent(Intent.ACTION_VIEW,Uri.parse(
"market://details?id=com.mycompany.mypackage")));
Don't replace the word market. That is specifically reserved by Android to open the Google Play store.
You can launch an app using intents. But to go to a specific page in the app, there should be a pre defined intent to reach there. Either it can be custom intent defined by that app and exposed to others or may be predefined system app. For example, you can open Settings application and reach a particular page in it based on the intents "Setting Application" has defined. Another example is "Camera Application". You can launch it and reach some page in it but not all pages.
In your case you may try something like this though:
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(uri, "video/mp4");
I hope you understand what I meant.
I have seen that there are a few good libraries out there. These seem to come with all the bells and whistles.
My application only needs to post a status update to a twitter account. Each time the user would have to enter their details. This is not the major part of my app, so I was wondering if there are any condensed libraries or simpler ways to achieve this without including all of the features that come with larger libraries.
Any advice greatly appreciated.
You can use the ACTION_SEND intent. Any application capable of sharing, including a twitter and facebook apps if installed, listens for that intent. The system will then show a dialog to let the user choose how they want to share the message. Use something like the following code:
final Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, subject);
intent.putExtra(Intent.EXTRA_TEXT, text);
startActivity(Intent.createChooser(intent, getString(R.string.share)));