android开发dialog弹窗点击蒙板（或者back键）第一次输入法键盘消失，点击第二次弹窗消失

以下只是我解决问题过程中的一点点个人总结，点滴积累，贵在坚持，感谢你的阅览！

AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setCancelable(true)//这个 setCancelable 可以不设置，要设置就设置为true        .setTitle("我是标题")        .setMessage("我是message")        .setNegativeButton("取消", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this,"点击取消，弹窗消失",Toast.LENGTH_SHORT).show();                mDialog.dismiss();            }        })        .setPositiveButton("确定", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this,"点击确定,弹窗消失",Toast.LENGTH_SHORT).show();                mDialog.dismiss();            }        });mDialog = builder.create();mDialog.setCanceledOnTouchOutside(false);//这个要设置为false，否则点击弹窗外部区域弹窗和键盘就直接都消失了if (mDialog != null && mDialog.getWindow() != null) {    mDialog.getWindow().getDecorView().setOnTouchListener(new View.OnTouchListener() {        @Override        public boolean onTouch(View v, MotionEvent event) {            InputMethodManager inputMethodManager = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);            if(mDialog.getWindow() != null && mDialog.getWindow().getCurrentFocus()!= null &&                    mDialog.getWindow().getCurrentFocus().getWindowToken() != null) {                boolean isHideSoftInputSuccess = inputMethodManager.hideSoftInputFromWindow(mDialog.getWindow().getCurrentFocus().getWindowToken(),                        InputMethodManager.HIDE_NOT_ALWAYS);                if (!isHideSoftInputSuccess){                    Toast.makeText(MainActivity.this,"输入法键盘已隐藏，弹窗消失",Toast.LENGTH_SHORT).show();                    mDialog.dismiss();                }else {                    Toast.makeText(MainActivity.this,"隐藏输入法键盘，弹窗不消失",Toast.LENGTH_SHORT).show();                }            }            return false;        }    });}mDialog.show();