android AlertDialog自定义全屏显示

1、定义dialog style如下：

2、java代码

        AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.DialogStyle);        final AlertDialog dialog = builder.create();        dialog.show();  // show之后在dialog的window上添加布局        WindowManager windowManager = getWindowManager();        Display display = windowManager.getDefaultDisplay();        Point point = new Point();        display.getSize(point);        Window window = dialog.getWindow();        WindowManager.LayoutParams lp = window.getAttributes();        lp.width = point.x;  // 设置宽度和高度        lp.height = point.y;        window.setAttributes(lp);        window.setContentView(R.layout.dialog_layout);        Button btn = window.findViewById(R.id.ok_btn);        if (btn != null) {            btn.setOnClickListener(new View.OnClickListener(){                @Override                public void onClick(View v) {                    dialog.dismiss();                }            });        }

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