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<activity
android:name=".DetailActivity"
android:label="@string/title_activity_detail"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.MainActivity"/>
</activity>
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@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profile);
// Add back button
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
// Back button functionality
case android.R.id.home:
this.finish();
return true;
}
return super.onOptionsItemSelected(item);
}
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ActionBar actionBar = getActionBar();
actionBar.setHomeButtonEnabled(true);
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<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value=".MainActivity" />