[英]AlertDialog inside a frame layout in an app with bottom navigation bar
我做了一個帶有底部導航欄的簡單應用。 我希望欄上的按鈕之一顯示一個片段,當它使用setCancelable(false)
加載時,上面會顯示一個alertdialog,但是我仍然可以在其他片段之間進行切換。 但是,當我在fragment類的onCreate()
中使用警報對話框時,播放應用程序並選擇帶有警報對話框的按鈕,警報對話框將覆蓋整個屏幕,而我無法使用底部導航欄中的其他按鈕。 因此,基本上我想做的是僅在框架布局(容器)中顯示警報對話框,而不在整個屏幕上顯示警報對話框,以便當警報對話框仍在屏幕上時,我仍然可以使用導航欄上的其他按鈕。 假設您有一個具有兩個單獨片段布局的應用程序。 我希望警報對話框僅以一種布局顯示。
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="abdul.com.myapp1.MainActivity">
<FrameLayout
android:id="@+id/frame_layout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@android:color/holo_orange_dark">
</FrameLayout>
<android.support.design.widget.BottomNavigationView
android:id="@+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="@menu/navigation" />
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView bottomNavigationView = (BottomNavigationView)
findViewById(R.id.navigation);
bottomNavigationView.setOnNavigationItemSelectedListener
(new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
Fragment selectedFragment = null;
switch (item.getItemId()) {
case R.id.navigation_home:
selectedFragment = second.newInstance();
break;
case R.id.navigation_dashboard:
selectedFragment = Third.newInstance();
break;
case R.id.navigation_notifications:
selectedFragment = Fourth.newInstance();
break;
case R.id.navigation_fifth:
selectedFragment = Fifth.newInstance();
break;
}
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.frame_layout, selectedFragment);
transaction.commit();
return true;
}
});
//Manually displaying the first fragment - one time only
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.frame_layout, second.newInstance());
transaction.commit();
//Used to select an item programmatically
//bottomNavigationView.getMenu().getItem(2).setChecked(true);
}
}
Third.java(這是我要使用alertdialog的地方)
public class Third extends Fragment {
public static Third newInstance() {
Third fragment = new Third();
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AlertDialog.Builder mBuilder = new AlertDialog.Builder(getActivity());
//LayoutInflater factory = LayoutInflater.from(v.getContext());
View mView2 = getActivity().getLayoutInflater().inflate(popup_onpressed, null);
mBuilder.setView(mView2);
final AlertDialog dialog = mBuilder.create();
dialog.show();
dialog.setCancelable(false);
dialog.setCanceledOnTouchOutside(false);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View mView = inflater.inflate(R.layout.third, container, false);
return mView;
}
}
我也嘗試將其粘貼在onCreateView()中,但是它也沒有起作用。
首先,您應該自定義alartdialog,然后可以使用此代碼在屏幕的任何位置顯示AlertDialog。
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