I press the navigation drawer, then if I press back button, the app exits rather than returning to the previous activity. If I change the xml file, then this problem doesn't occur. So I think the problem is in the xml file. Can anyone tell me what is the problem? Here's the xml code.`
<ImageView
android:id="@+id/imageView1"
android:layout_width="500dp"
android:layout_height="200dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="@drawable/blue_train" />
<TextView
android:id="@+id/trainName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="200dp"
android:layout_marginLeft="14dp"
android:text="Train Name"
android:textColor="@color/bluedark"
android:textSize="15sp" />
<EditText
android:id="@+id/etName"
android:layout_width="150dp"
android:layout_height="40dp"
android:layout_alignBaseline="@+id/trainName"
android:layout_alignBottom="@+id/trainName"
android:layout_marginLeft="30dp"
android:layout_toRightOf="@+id/trainName"
android:background="@drawable/line"
android:ems="10" >
<requestFocus />
</EditText>
<Button
android:id="@+id/getS"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_below="@+id/etName"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:background="@drawable/button2"
android:text="Get Train Schedule"
android:textColor="@color/white" />
`
This will close the drawer when it's open and back is pressed rather than taking you back to the previous activity (or exiting).
DrawerLayout drawer...
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
if(drawer.isDrawerOpen(Gravity.LEFT)){
drawer.closeDrawer(Gravity.LEFT);
}else{
super.onBackPressed();
}
}
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