java - 如何检查警报对话框的可见性？

Question

我想检查警报对话框是否可见。在大多数帖子中我看到他们使用了 isShowing，但现在似乎无法描述。

当用户单击信息 TextView 时，我暂停音乐。如果用户关闭警报对话框，音乐将再次播放。

info_Button.setClickable(true);
    info_Button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            mediaControl.pause();
            AlertDialog.Builder playstopbutton_builder = new AlertDialog.Builder(exercise_arm_triceps_execute.this);
            playstopbutton_builder.setTitle("WARNING").setMessage("Please get warm before exercising!");
            playstopbutton_builder.create().show();
            playstopbutton_builder.setCancelable(false);

            //if alert dialog is visible keep music paused
            //else if mediaControl.start();

        }
    });

Answer 1

由于您已将 Cancelable 设置为 false，因此您可能需要使用

对于积极按钮，请说“好”

playstopbutton_builder.setPositiveButton(positiveBtnText,
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                    //resume ur media player here
                }
            })

否定按钮如取消

playstopbutton_builder.setNegativeButton(negativeBtnText,
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                    //resume ur media player here
                }
            })

所以看起来像这样

info_Button.setClickable(true);
info_Button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        mediaControl.pause();
        AlertDialog.Builder playstopbutton_builder = new AlertDialog.Builder(exercise_arm_triceps_execute.this);
        playstopbutton_builder.setTitle("WARNING").setMessage("Please get warm before exercising!");
        playstopbutton_builder.create().show();
        playstopbutton_builder.setCancelable(false);
playstopbutton_builder.setPositiveButton(positiveBtnText,
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                    //resume ur media player here
                }
            });
playstopbutton_builder.setNegativeButton(negativeBtnText,
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                    //resume ur media player here
                }
            });
    }
});