设置AlertDialog全屏的方法

<!--首先在style里写属性-->

< style name= "dialog" parent= "@android:style/Theme.Dialog" >

<!-- 有无边框 -->

< item name= "android:windowFrame" >@null</ item >

<!-- 是否浮现在activity之上 -->

< item name= "android:windowIsFloating" >true</ item >

<!-- 是否透明 -->

< item name= "android:windowIsTranslucent" >true</ item >

<!-- 背景透明 -->

< item name= "android:windowBackground" >@color/white</ item >

<!-- 模糊 -->

< item name= "android:backgroundDimEnabled" >true</ item >

<!--无标题 -->

< item name= "android:windowNoTitle" >true</ item >

</ style >

//然后建一个Dialog继承AlertDialog，重写第一个方法，在手写show方法

public class MDialog extends AlertDialog {

public MDialog( @NonNull Context context) {

super (context, guoyinghan.sslj.R.style. dialog );

}

@Override

public void show() {

super .show();

/**

* 设置宽度全屏，要设置在show的后面

*/

WindowManager.LayoutParams layoutParams = getWindow().getAttributes();

layoutParams. gravity = Gravity. BOTTOM ;

layoutParams. width = ViewGroup.LayoutParams. MATCH_PARENT ;

layoutParams. height = ViewGroup.LayoutParams. WRAP_CONTENT ;

getWindow().getDecorView().setPadding( 0 , 0 , 0 , 0 );

getWindow().setAttributes(layoutParams);

}

}

//实列化建好的类

final MDialog dialog = new MDialog(Details_qx. this );

//可以设置自己的布局

View inflate = View. inflate (Details_qx. this , R.layout. fengxiang , null );

dialog.setView(inflate);

Window window = dialog.getWindow();

window.setGravity(Gravity. BOTTOM ); //此处可以设置dialog显示的位置

dialog.show();

//关闭的方法

//dialog. cancel ();