How to send data between one application to other application in android?

Question

i\'ve tried to sending data between App1 to App2 via Intent in Android

i used this code but i couldn\'t resolve my problem.

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Answer 1

When you do this:

    Intent i2 = new Intent("com.appstore.MainActivity");
    i2.setPackage("com.appstore");//the destination packageName
    i2.putExtra("Id", "100");
    startActivity(i2);

you are calling the single-argument constructor of Intent. In this constructor, the argument is interpreted as the Intent ACTION. You then set the package name in the Intent.

When you call startActivity() with this Intent, Android will look for an Activity that contains an with the specified ACTION. There are no installed applications that have an Activity defined like this in the manifest:

So Android will not be able to find and launch the Activity that you want.

As you want to specify explicitly the component that you want to use, instead of using the 1-argument Intent constructor, you should do this instead:

    Intent i2 = new Intent();
    i2.setClassName("com.appstore", "com.appstore.MainActivity");
    i2.putExtra("Id", "100");
    startActivity(i2);

Using setClassName() you provide the package name and the class name of the component that you want to launch.