【移动应用开发技术】Android如何加载loading对话框的功能

【移动应用开发技术】Android如何加载loading对话框的功能

一、自定义Dialog/upload/information/20200623/125/120602.gif/upload/information/20200623/125/120603.gifpublic

class

LoadingDialog

extends

Dialog

{

public

LoadingDialog(Context

context)

{

super(context);

}

public

LoadingDialog(Context

context,

int

theme)

{

super(context,

theme);

}

@Override

public

void

show()

{

//在show之前添加禁止获取焦点

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,

WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);

super.show();

if

(Build.VERSION.SDK_INT

>=

Build.VERSION_CODES.KITKAT)

{

int

uiOptions

=

View.SYSTEM_UI_FLAG_LAYOUT_STABLE

|

View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION

|

View.SYSTEM_UI_FLAG_HIDE_NAVIGATION

|

View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY

|

View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN

|

View.SYSTEM_UI_FLAG_FULLSCREEN;

this.getWindow().getDecorView().setSystemUiVisibility(uiOptions);

}

//在show之后取消禁止获取焦点属性，否则会导致dialog无法处理点击

this.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);

}

}二、通过WindowManager的addView方法实现private

WindowManager

mwWindowManager;

private

FrameLayout

mForewarnLayout;

private

boolean

isShowing

=

false;

/**显示全屏的加载动画*/

public

void

alertLoadingDialog(){

if

(!isShowing){

mForewarnLayout

=

(FrameLayout)

LayoutInflater.from(getApplicationContext())

.inflate(R.layout.view_loading,

null,

false);

//

获取window管理对象

mwWindowManager

=

(WindowManager)

getSystemService(Context.WINDOW_SERVICE);

//

设置布局参数

WindowManager.LayoutParams

forewarnLayoutParams

=

new

WindowManager.LayoutParams();

forewarnLayoutParams.type

=

WindowManager.LayoutParams.TYPE_PHONE;

//

设置window

TYPE

forewarnLayoutParams.format

=

PixelFormat.RGBA_8888;

//

设置图片格式，效果位背景透明

//

设置Window

flag

forewarnLayoutParams.flags

=

WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL

|

WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;

forewarnLayoutParams.gravity

=

Gravity.LEFT

|

Gravity.TOP;

//

//

调整悬浮窗口至左上角，便于调整坐标

//

设置悬浮窗口长宽数据

forewarnLayoutParams.width

=

WindowManager.LayoutParams.MATCH_PARENT;

forewarnLayoutParams.height

=

WindowManager.LayoutParams.MATCH_PARENT;

//

forewarnLayoutParams.windowAnimations

=

R.style.anim_view;//

添加进入动画

//

添加布局视图

mwWindowManager.addView(mForewarnLayout,

forewarnLayoutParams);

isShowing

=

true;

}

}

/**取消全屏的加载动画*/

public

void

dismissTwo()

{

if

(isShowing)

{

mwWindowManager.removeViewImmediate(mForewarnLayout);

isShow