如何从活动中调用片段活动？

Question

I am actually using in Android Studio for my Android application. I have imported a module in my project. The module consist of fragment activities. I have compiled the module into the gradle app file and also included the module in the gradle settings file. I want to call the fragment activity with a button from an activity, but when I am clicking on the button the application crashes. I have declared the fragment activity in my AndroidManifest.xml file but the application keeps on crashing.

Error when the application is crashing:

I am using the following code to call the fragment activity :

Button btn1 = (Button)findViewById(R.id.button);
btn1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
starActivity(new Intent(projectActivity.this, moduleFragmentActiviy.class));
}
});

I assume that I am getting this error because I am calling a fragment activity from an activity directly. If this is the case, may I know how to call the fragment activity please.

Answer 1

If you have access to edit that module source code, that the right way to do this is to add intent-filter to FragmentActivity.

In module's AndroidManifest.xml

<activity
    android:name=".FragmentAcitivity" >  
    <intent-filter>
        <action android:name="com.example.YOUR_ACTION" />
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

And in MainActivity of main module:

Button btn1 = (Button) findViewById(R.id.button);
btn1.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        startActivity(new Intent("com.example.YOUR_ACTION"));
    }
});

... and I hope you use UpperCamelCase for class naming

Answer 2

Can you share your manifest file? The syntax looks correct. As said in the error message - please check that activity class is declared, and, specifically, it is declared in manifest file .