【移动应用开发技术】Android如何实现自适应屏幕的弹窗广告

【移动应用开发技术】Android如何实现自适应屏幕的弹窗广告

在下给大家分享一下Android如何实现自适应屏幕的弹窗广告，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！具体内容如下内容：弹窗广告特点：根据屏幕尺寸和原图片比例自适应代码如下：package

com.example.leixiansheng.addialog;

import

android.annotation.SuppressLint;

import

android.app.Dialog;

import

android.content.Context;

import

android.content.Intent;

import

android.graphics.Bitmap;

import

android.os.Bundle;

import

android.util.DisplayMetrics;

import

android.view.Gravity;

import

android.view.View;

import

android.view.Window;

import

android.view.WindowManager;

import

android.widget.ImageView;

import

android.widget.RelativeLayout;

import

android.widget.Toast;

import

com.bumptech.glide.Glide;

import

com.bumptech.glide.request.animation.GlideAnimation;

import

com.bumptech.glide.request.target.SimpleTarget;

/**

*

Created

by

Leixiansheng

on

2018/6/28.

*/

public

class

AdDialog

extends

Dialog

implements

View.OnClickListener

{

private

Context

context;

private

float

finalWidth;

//最终宽度

private

float

finalHeight;

//最终高度

private

int

padding

=

50;

//屏幕边距间隔

private

int

picWidth;

//图片真实宽度

private

int

picHeight;

//图片真实高度

private

String

mUrl;

public

AdDialog(Context

context,String

url)

{

//

更改样式,把背景设置为透明的

super(context,

R.style.LocationDialogStyle);

this.context

=

context;

mUrl

=

url;

}

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.dialog_ad);

calculateHeightAndWidth();

//初始化布局的位置

initLayoutParams();

setCancelable(false);

setCanceledOnTouchOutside(false);

}

/**

*

按实际图片比例对其的宽高进行缩放

*/

private

void

calculateHeightAndWidth()

{

DisplayMetrics

dm

=

context.getResources().getDisplayMetrics();

final

int

screenWidth

=

dm.widthPixels;

final

int

screenHeight

=

dm.heightPixels;

//获取图片真正的宽高

Glide.with(context)

.load(mUrl)

.asBitmap()//强制Glide返回一个Bitmap对象

.into(new

SimpleTarget<Bitmap>()

{

@Override

public

void

onResourceReady(Bitmap

bitmap,

GlideAnimation<?

super

Bitmap>

glideAnimation)

{

picWidth

=

bitmap.getWidth();

picHeight

=

bitmap.getHeight();

if

(picHeight

>

picWidth)

{

//真实图片高度大于宽度时

finalHeight

=

screenHeight

-

padding

*

2;

finalWidth

=

((picWidth

*

100)

/

picHeight)

*

finalHeight/100;

}

else

{

//真实图片宽度大于高度时

finalWidth

=

screenWidth

-

padding

*

2;

finalHeight

=

((picHeight

*

100)

/

picWidth)

*

finalWidth/100;

}

if

((int)

finalWidth

>

screenWidth

||

(int)

finalHeight

>

screenHeight)

{

//放大后的比例超出屏幕时

finalWidth

=

picWidth;

finalHeight

=

picHeight;

}

initAdView(finalWidth,

finalHeight);

}

});

}

@SuppressLint("ResourceType")

private

void

initAdView(float

width,

float

height)

{

RelativeLayout

relativeLayout

=

(RelativeLayout)

findViewById(R.id.rl_ad);

ImageView

ivAd

=

new

ImageView(context);

ivAd.setScaleType(ImageView.ScaleType.FIT_XY);

ivAd.setId(222);

ivAd.setOnClickListener(this);

//

RelativeLayout.LayoutParams

params1

=

new

RelativeLayout.LayoutParams(UIUtils.px2Dp((int)

width),

UIUtils.px2Dp((int)

height));

RelativeLayout.LayoutParams

params1

=

new

RelativeLayout.LayoutParams((int)

width,

(int)

height);

params1.addRule(RelativeLayout.CENTER_HORIZONTAL);

params1.setMargins(0,

dp2Px(50),

0,

0);

relativeLayout.addView(ivAd,

params1);

Glide

.with(context)

.load(mUrl)

.crossFade()

.into(ivAd);

ImageView

ivCancel

=

new

ImageView(context);

ivCancel.setId(333);

ivCancel.setOnClickListener(this);

ivCancel.setImageResource(R.drawable.icon_ad_close);

RelativeLayout.LayoutParams

params2

=

new

RelativeLayout.LayoutParams(dp2Px(30),

dp2Px(30));

params2.addRule(RelativeLayout.ALIGN_PARENT_TOP);

params2.addRule(RelativeLayout.ALIGN_END,222);

relativeLayout.addView(ivCancel,params2);

}

//

初始化布局的参数

private

void

initLayoutParams()

{

//

布局的参数

WindowManager.LayoutParams

params

=

getWindow().getAttributes();

params.gravity

=

Gravity.CENTER_HORIZONTAL

|

Gravity.CENTER;

getWindow().setAttributes(params);

}

@Override

public

void

onClick(View

v)

{

switch

(v.getId())

{

case

222:

Toast.makeText(context,

"你点击了广告，即将进入···",Toast.LENGTH_SHORT).show();

dismiss();

break;

case

333:

dismiss();

break;

}

}

public

int

dp2Px(int

dp){

/*

1、px

=

dp

*

(dpi

/

160)

2、px/dp

=

density;//像素密度比

*/

DisplayMetrics

metrics

=

context.getResources().getDisplayMetrics();

//

int

dpi

=

metrics.densityDpi;//获得当前设备的dpi

,像素密度

float

density

=

metrics.density;//密度比

return

(int)

(density

*

dp

+

.5f);

}

}动态布局可参考我的文章：安卓动态布局Mainpackage

com.example.leixiansheng.addialog;

import

android.support.v7.app.AppCompatActivity;

import

android.os.Bundle;

import

java.util.Random;

public

class

MainActivity

extends

AppCompatActivity

{

private

String[]

adUrls

=

{"/20101028/0017029521232265_b.jpg",

"/58pic/13/56/51/95K58PICPFk_1024.jpg",

"/it/u=1615585387,2628665620&fm=27&gp=0.jpg",

"/it/u=1306190881,4135880992&fm=27&gp=0.jpg"};

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setConten