android - 显示 PopupWindow 时无法单击父 Activity 按钮

Question

在我的父 Activity 中我有一个按钮，当我点击它时显示带有 2 个 ImageButton 的 PopUpWindow .. 当这个 PopUpWindow 存在时'无法点击我的父 Activity Button .. 这是我的代码，它有什么问题吗..

public class PopUpExample extends Activity {

    Button but;
    LinearLayout mainLayout;
    PopupWindow popUp;
    boolean click = true;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);      

        mainLayout = (LinearLayout) findViewById(R.id.main_layout);     
        but = (Button) findViewById(R.id.main_btn);     

        but.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                View popView;

                if(click){
                    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
                    popUp = new PopupWindow(inflater.inflate(R.layout.popup_example, null, false),100, 50, true);
                    popUp.showAtLocation(mainLayout, Gravity.CENTER, 0, 0);
                    popUp.update();
                    click = false;

                    popView = popUp.getContentView();

                    ImageButton call = (ImageButton) popView.findViewById(R.id.call_btn);   

                    call.setOnClickListener(new OnClickListener() {

                        public void onClick(View v) {                           
                            Toast.makeText(PopUpExample.this, "Calling...", Toast.LENGTH_SHORT).show();
                        }
                    });

                    ImageButton sms = (ImageButton) popView.findViewById(R.id.sms_btn); 

                    sms.setOnClickListener(new OnClickListener() {

                        public void onClick(View v) {                           
                            Toast.makeText(PopUpExample.this, "Sms...", Toast.LENGTH_SHORT).show();
                        }
                    });

                }else{
                    popUp.dismiss();
                    click = true;
                }                       

            }    
        });
    }    
}

Answer 1

弹出 View 在创建时会从主视图中夺走焦点，因此用户无法单击主视图上的元素。
要单击主视图，需要先关闭 popview。
关于代码中的上述理论，您试图通过单击处于主要 Activity 中的按钮来关闭 popview，这是不可能的。

以下代码具有您需要合并到上述代码中的更改

public class PopUpExample extends Activity {    
    Button but;
    LinearLayout mainLayout;
    PopupWindow popUp;
    //boolean click = true;
    View popView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mainLayout = (LinearLayout) findViewById(R.id.main_layout);     
        but = (Button) findViewById(R.id.main_btn);     

        but.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                // if(click){
                    LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
                    popUp = new PopupWindow(inflater.inflate(R.layout.popup_example, null, false),100, 50, true);
                    popUp.showAtLocation(mainLayout, Gravity.CENTER, 0, 0);
                    popUp.update();
                    //click = false;

                    popView = popUp.getContentView();

                    ImageButton call = (ImageButton)popView.findViewById(R.id.call_btn);   

                    call.setOnClickListener(new OnClickListener() {

                        public void onClick(View v) {                           
                            Toast.makeText(MainActivity.this, "Calling...", Toast.LENGTH_SHORT).show();
                            popUp.dismiss();
                        }
                    });

                    ImageButton sms = (ImageButton)popView.findViewById(R.id.sms_btn); 

                    sms.setOnClickListener(new OnClickListener() {

                        public void onClick(View v) {                           
                            Toast.makeText(MainActivity.this, "Sms...", Toast.LENGTH_SHORT).show();
                            popUp.dismiss();
                        }
                    });

               //}else{
                   // popUp.dismiss();
                 // click = true;
               // }                       

            }    
        });
}
}