How to launch app at the same time on Android

Question

I have two apps, A and B.
I want to call B by A.
My code in A is as below:

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(new ComponentName("com.example.bapp","com.example.bapp.BActivity"));
intent.putExtra ("test2abc", "abctest2");
startActivity(intent);

And B's intent filter in manifest as below:

<intent-filter>
    <action android:name="ACTION_BACKCALL" />
    <category android:name="android.intent.category.DEFAULT" />
</intent-filter>

But it will close B before launch B while B had opened.
I find below code to open *.txt file. This will open two txt reader app at the same time.

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), mimetype);
startActivity(inte

nt);

How can I arrive that?

do you want to launch B without having it restart? or A and B should be active at same time? — Nimish Choudhary, Jan 10 '13 at 06:07
While A launch B, and pressed "home" button to desktop, then I click the A app's icon. It will show the B which had launch. — brian, Jan 10 '13 at 06:53
so you have 2 apps A and B. B can be launched separately and by A. So when you press the A apps icon you don't want to see B rather A all the time ? — Nimish Choudhary, Jan 10 '13 at 09:45

score 4 · Answer 1 · edited May 23 '17 at 12:04

4

hey i found this code snippet Launch an application from another application on Android which will work for you set the address of the application which you want to launch

Intent LaunchIntent = getPackageManager().getLaunchIntentForPackage("com.package.address");
startActivity(LaunchIntent);

edited May 23 '17 at 12:04

Community

1
1

answered Jan 10 '13 at 06:26

Swapnil

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score 2 · Accepted Answer · answered Jan 10 '13 at 13:05

you might want to try android:launchMode="singleInstance" and android:finishOnTaskLaunch="true" while defining launcher activity.

   <activity
        android:name="com.example.test.sampleMediaPlayer"
        android:label="@string/app_name"
        android:launchMode="singleInstance"
        android:finishOnTaskLaunch="true" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

For Activity A.

How to launch app at the same time on Android

2 Answers2