CODEWITHSUNDEEP
javaandroidandroid-intentruntime-error
SSMA
SSMA

Reputation: 497

Start Activity of 2nd app from 1st app in android

I am new to android development. I am trying to start an activity of 2nd app from 1st app on button click. But my app gets stopped. i might be doing something wrong with the intent. This is the LOGCAT:

02-12 18:06:50.948: D/gralloc_goldfish(1247): Emulator without GPU emulation detected.
02-12 18:07:02.338: D/AndroidRuntime(1247): Shutting down VM
02-12 18:07:02.338: W/dalvikvm(1247): threadid=1: thread exiting with uncaught exception (group=0xb3ad1b90)
02-12 18:07:02.528: E/AndroidRuntime(1247): FATAL EXCEPTION: main
02-12 18:07:02.528: E/AndroidRuntime(1247): Process: smd.homework1.question2, PID: 1247
02-12 18:07:02.528: E/AndroidRuntime(1247): java.lang.IllegalStateException: Could not execute method of the activity
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.view.View$1.onClick(View.java:3814)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.view.View.performClick(View.java:4424)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.view.View$PerformClick.run(View.java:18383)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.os.Handler.handleCallback(Handler.java:733)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.os.Handler.dispatchMessage(Handler.java:95)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.os.Looper.loop(Looper.java:137)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.ActivityThread.main(ActivityThread.java:4998)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at java.lang.reflect.Method.invokeNative(Native Method)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at java.lang.reflect.Method.invoke(Method.java:515)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at dalvik.system.NativeStart.main(Native Method)
02-12 18:07:02.528: E/AndroidRuntime(1247): Caused by: java.lang.reflect.InvocationTargetException
02-12 18:07:02.528: E/AndroidRuntime(1247):     at java.lang.reflect.Method.invokeNative(Native Method)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at java.lang.reflect.Method.invoke(Method.java:515)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.view.View$1.onClick(View.java:3809)
02-12 18:07:02.528: E/AndroidRuntime(1247):     ... 11 more
02-12 18:07:02.528: E/AndroidRuntime(1247): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=textViewActivity }
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1632)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1424)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Activity.startActivityForResult(Activity.java:3423)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Activity.startActivityForResult(Activity.java:3384)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Activity.startActivity(Activity.java:3626)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at android.app.Activity.startActivity(Activity.java:3594)
02-12 18:07:02.528: E/AndroidRuntime(1247):     at smd.homework1.question2.MainActivity.function1(MainActivity.java:36)
02-12 18:07:02.528: E/AndroidRuntime(1247):     ... 14 more

line 36 is startActivity(i); button click function is:

public void function1(View v){
    Intent i= new Intent("textViewActivity");
    startActivity(i);
}

In the mainifest of 

<activity
    android:name="Activity2"
    android:label="@string/a2" >
    <intent-filter>
        <action android:name="textViewActivity" />
    </intent-filter>
</activity>

Upvotes: 0

Views: 142

Answers (2)

user1974640
user1974640

Reputation:

Declare the activity in AndroidManifest.xml as

<activity
     android:name="Activity2"
     android:label="@string/a2"
     android:exported="true" >
</activity>

The code to execute it is:

Intent intent = new Intent();
intent.setComponent(new ComponentName("com.example", "com.example.Activity2"));
startActivity(intent);

Replace com.example with the second app package name and com.example.Activity2 with the package-qualified activity name.

Declare the activity in AndroidManifest.xml as

<activity
     android:name="Activity2"
     android:label="@string/a2" >
     <intent-filter>
         <action android:name="com.example.myintent" />
     </intent-filter>
</activity>

The code to execute it is:

Intent intent = new Intent();
intent.setAction("com.example.myintent");
startActivity(intent);

Replace com.example.myintent with your intent name.

Upvotes: 2

Ahmad Dwaik &#39;Warlock&#39;
Ahmad Dwaik &#39;Warlock&#39;

Reputation: 5971

In android every application is a separate process, you can't do any communication except via intents, so you need to send an action intent from app1 and implement a broadcast-receiver in app2 that catches the intent and fire your activity.

app1->activityA->send intent->app2 receiver->start activity-> activityB

here is another way offered by official doc where you can skip broacastreceivers as your activity will be the receiver of a certain intent filter

Upvotes: 3

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