如何使用触摸侦听器禁用布局的阿尔法“颜色”

Question

您好，我创建了一个测验应用程序，第二个Java类（Menu2）上有一个按钮，如果有人单击此按钮，会弹出一个窗口和背景（Menu2的布局）获得0.1的透明度。当有人点击在POPUPWINDOW弹出窗口关闭它自己和透明度将被设置为。但是如果有人在弹出窗口外点击，弹出窗口会关闭，但透明度会持续下去......我该如何解决这个问题？

MENU2：

 public class Menu2 extends AppCompatActivity { 




private DrawerLayout mDrawerLayout2; 
private ActionBarDrawerToggle mToggle; 
private Toolbar mToolbar; 
private Button popup; 
private PopupWindow popupWindow;private LayoutInflater layoutInflater; //Alows to add a new layout in our window 



@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_menu2); 


    TextView txtScore = (TextView) findViewById(R.id.textScore2); 
    TextView txtHighScore = (TextView)findViewById(R.id.textHighScore); 
    ImageView imgTrophyView1 = (ImageView)findViewById(R.id.trophy1); 
    ImageView imgTrophyView2 = (ImageView) findViewById(R.id.trophy2); 
    TextView trophy1Txt = (TextView) findViewById(R.id.trophy1Text); 
    TextView trophy2Txt = (TextView) findViewById(R.id.trophy2Text); 

    Intent intent = getIntent(); 
    int mScore = intent.getIntExtra ("score",0); 
    txtScore.setText("Your score is: " + mScore); 

    SharedPreferences sharedpreferences = getSharedPreferences("mypref", Context.MODE_PRIVATE); 
    int applyView =sharedpreferences.getInt("currentscore",0); 


    SharedPreferences mypref =getPreferences(MODE_PRIVATE); 
    int highScore = mypref.getInt("highScore", 0); 
    if (highScore>= mScore) 
     txtHighScore.setText("High score: " + highScore); 


    else{ 
     txtHighScore.setText("New highscore: " + mScore); 

     SharedPreferences.Editor editor = mypref.edit(); 
     editor.putInt("highScore",mScore); 
     editor.commit(); 

    } 

    if (applyView >=10) { 
     imgTrophyView1.setVisibility(View.VISIBLE); 
     trophy1Txt.setVisibility(View.VISIBLE); 
    } 
     if (applyView >= 20){ 
      imgTrophyView2.setVisibility(View.VISIBLE); 
      trophy2Txt.setVisibility(View.VISIBLE); 
    } 


    popup = (Button)findViewById(R.id.enablePOPUP); 
    popup.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      layoutInflater =(LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE); 
      ViewGroup container = (ViewGroup)layoutInflater.inflate(R.layout.popup_menu2_1,null); 
      popupWindow = new PopupWindow(container,1000,980,true); //400,400=popUp size, true = makes that we can close the pop up by simply click out of the window 
      popupWindow.showAtLocation(mDrawerLayout2, Gravity.CENTER, 0, 0); 
      mDrawerLayout2.setAlpha((float) 0.1); 

      container.setOnTouchListener(new View.OnTouchListener(){ 

       @Override 

         public boolean onTouch(View view, MotionEvent motionEvent ){ 
         mDrawerLayout2.setAlpha((float) 1); 
           popupWindow.dismiss(); 

         return true; 

       } 
      }); 
     } 
    }); 





    mToolbar = (Toolbar)findViewById(R.id.nav_action); 
    setSupportActionBar(mToolbar); 
    mDrawerLayout2 = (DrawerLayout) findViewById(R.id.drawerLayout2); 

    mToggle = new ActionBarDrawerToggle(this, mDrawerLayout2, R.string.open, R.string.close); 
    mDrawerLayout2.addDrawerListener(mToggle); 
    mToggle.syncState(); 
    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 

    NavigationView mNavigationView = (NavigationView) findViewById(nv2); 
    mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { 

     @Override 
     public boolean onNavigationItemSelected(MenuItem menuItem){ 
      switch (menuItem.getItemId()){ 
       case(R.id.nav_home2): 
        Intent accountActivity2 = new Intent(getApplicationContext(),QuizActivity.class); 
        startActivity(accountActivity2); 

      } 
      return true; 
     } 
    });} 

      public void onClick(View view) { 

       Intent intent = new Intent(Menu2.this, QuizActivity.class); 
       startActivity(intent); 

} 




@Override //Makes that the "Burger" Item, shows the Drawer if someone clicks on the simbol 
public boolean onOptionsItemSelected(MenuItem item) { 
    if (mToggle.onOptionsItemSelected(item)) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 


} 

}

菜单2 XML：

 <?xml version="1.0" encoding="utf-8"?> 
     <android.support.v4.widget.DrawerLayout 
     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:layout_width="match_parent" 
     android:layout_height="match_parent" 
     tools:context="amapps.impossiblequiz.Menu2" 
     android:id="@+id/drawerLayout2"> 


<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical"> 


    <include 
     layout="@layout/navigation_action" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 


    <RelativeLayout 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent"> 


     <TextView 
      android:id="@+id/trophy2Text" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="20 points= High knowledge" 
      android:visibility="invisible" 
      android:layout_alignTop="@+id/trophy1Text" 
      android:layout_alignLeft="@+id/trophy2" 
      android:layout_alignStart="@+id/trophy2" 
      android:layout_alignRight="@+id/trophy2" 
      android:layout_alignEnd="@+id/trophy2" /> 

     <TextView 
      android:id="@+id/textScore2" 
      android:layout_width="wrap_content" 
      android:layout_height="50dp" 
      android:background="#f60" 
      android:paddingTop="10dp" 
      android:paddingLeft="35dp" 
      android:text="Your score is:" 
      android:textAppearance="@style/TextAppearance.AppCompat" 
      android:textColor="#ffffff" 
      android:textSize="20dp" 
      android:layout_marginTop="28dp" 
      android:layout_below="@+id/textView2" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentStart="true" 
      android:layout_alignParentRight="true" 
      android:layout_alignParentEnd="true" /> 

     <TextView 
      android:id="@+id/textHighScore" 
      android:layout_width="wrap_content" 
      android:layout_height="50dp" 
      android:background="#FFAB00" 
      android:paddingLeft="35dp" 
      android:paddingRight="100dp" 
      android:paddingTop="10dp" 
      android:text="Highest score:" 
      android:textAppearance="@style/TextAppearance.AppCompat" 
      android:textColor="#ffffff" 
      android:textSize="20dp" 
      android:layout_marginTop="13dp" 
      android:layout_below="@+id/textScore2" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentStart="true" 
      android:layout_alignParentRight="true" 
      android:layout_alignParentEnd="true" /> 

     <Button 
      android:id="@+id/tryAgain_button" 
      android:layout_width="150dp" 
      android:layout_height="50dp" 
      android:background="@drawable/bg_pill" 
      android:onClick="onClick" 
      android:text="Restart Quiz!" 
      android:textColor="#ffffff" 
      android:layout_marginTop="18dp" 
      android:layout_below="@+id/textHighScore" 
      android:layout_centerHorizontal="true" /> 

     <TextView 
      android:id="@+id/textView2" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_marginTop="33dp" 
      android:text="Stats: play and get trophies!" 
      android:textAppearance="@style/TextAppearance.AppCompat.Button" 
      android:textSize="20dp" 
      android:layout_alignParentTop="true" 
      android:layout_centerHorizontal="true" /> 

     <ImageView 
      android:id="@+id/trophy1" 
      android:layout_width="80dp" 
      android:layout_height="80dp" 
      android:layout_alignParentLeft="true" 
      android:layout_alignParentStart="true" 
      android:layout_below="@+id/tryAgain_button" 
      android:layout_marginLeft="26dp" 
      android:layout_marginStart="26dp" 
      android:layout_marginTop="40dp" 
      android:visibility="invisible" 
      app:srcCompat="@drawable/trophy1" /> 

     <ImageView 
      android:id="@+id/trophy2" 
      android:layout_width="80dp" 
      android:layout_height="80dp" 
      android:layout_alignTop="@+id/trophy1" 
      android:layout_marginLeft="24dp" 
      android:layout_marginStart="24dp" 
      android:layout_toEndOf="@+id/trophy1" 
      android:layout_toRightOf="@+id/trophy1" 
      android:visibility="invisible" 
      app:srcCompat="@drawable/trophy2" /> 

     <TextView 
      android:id="@+id/trophy1Text" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="10 points= Basic intelligence" 
      android:visibility="invisible" 
      android:layout_below="@+id/trophy1" 
      android:layout_alignLeft="@+id/trophy1" 
      android:layout_alignStart="@+id/trophy1" 
      android:layout_marginTop="23dp" 
      android:layout_toLeftOf="@+id/trophy2" 
      android:layout_toStartOf="@+id/trophy2" /> 

     <ImageView 
      android:id="@+id/statsTrophy" 

      app:srcCompat="@drawable/statsoftrophy" 
      android:layout_width="50dp" 
      android:layout_height="50dp" 
      android:layout_alignTop="@+id/textHighScore" 
      android:layout_above="@+id/tryAgain_button" 
      android:layout_alignParentRight="true" 
      android:layout_alignParentEnd="true" /> 

     <Button 
      android:id="@+id/enablePOPUP" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:text="Button" 
      android:layout_below="@+id/trophy2" 
      android:layout_alignRight="@+id/textView2" 
      android:layout_alignEnd="@+id/textView2" /> 


    </RelativeLayout> 


</LinearLayout> 


<android.support.design.widget.NavigationView 
    android:layout_width="wrap_content" 
    android:layout_height="match_parent" 
    app:menu="@menu/navigation_menu2" 
    android:layout_gravity="start" 
    android:id="@+id/nv2" 
    app:headerLayout="@layout/navigation_header" 
    app:itemIconTint="@drawable/tint_color_selector2"> 




</android.support.design.widget.NavigationView> 

Answer 1

试着这样做：

popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() { 

    @Override 
    public void onDismiss() { 
     mDrawerLayout2.setAlpha((float) 1); 
     popup.dismiss(); 

    } 
});