Android笔记之版本更新

安卓版本更新

1.在应用首界面onCreate中调用initVersion（）；

/**

* 更新版本

private void initVersion() {

// TODO Auto-generated method stub

// 获取版本号

getLocalVersion();

String url = Urls. VERSION_CODE ;

Log. i ( "更新版本url---" , url);

Request<String> request = NoHttp. createStringRequest (url,

RequestMethod. POST );

queue .add(222, request, new OnResponseListener<String>() {

@Override

public void onStart( int what) {

// TODO Auto-generated method stub

}

@Override

public void onSucceed( int what, Response<String> response) {

// TODO Auto-generated method stub

Log. i ( "onSucceed---" , response.get());

Gson gson = new Gson();

VersionUpdate update = gson.fromJson(response.get(),

VersionUpdate. class );

String apkUrl = update. appmanage . appUrl ;

// 最新 apk 下载地址

String newversion_code = update. appmanage . version_code ;

int new_version_code = Integer. parseInt (newversion_code);

String errorCodes = update. errorCode ;

Log. i ( "appUrl---" , apkUrl);

Log. i ( "version_code---" , newversion_code);

Log. i ( "errorCode2---" , errorCodes);

if ( "0" .equals(errorCodes)) {

// 0 没有获取到后台版本号

} else if ( "1" .equals(errorCodes)) {

// 1 获取到后台版本号

if (new_version_code == localCode ) {

// 相同说明当前已经是最新版本

return ;

} else {

// 说明有新版本需要更新

// 弹对话框提示用户去下载新版本

showUpdateDialog(apkUrl);

}

@Override

public void onFailed( int what, String url, Object tag,

Exception exception, int responseCode, long networkMillis) {

// TODO Auto-generated method stub

}

@Override

public void onFinish( int what) {

// TODO Auto-generated method stub

}

});

}

2.获取应用当前版本号

private int localCode ;

/**

* 获取应用当前版本号

private void getLocalVersion() {

// 如何拿到版本信息？

pm = context .getPackageManager();

// 获取到对应的包下面的信息

// 写0获取到所有的其他的代表写谁获取谁

try {

// PackageInfo 是对整个清单文件的封装

PackageInfo packageInfo = pm .getPackageInfo( context .getPackageName(), 0);

// ApplicationInfo 是Application节点的封装

localCode = packageInfo. versionCode ;

//这里只获取localCode进行判断

} catch (PackageManager.NameNotFoundException e){

// TODO Auto-generated catch block

e.printStackTrace();

}

3.下载新版本

private AlertDialog alertDialog ;

/**

* 下载新版本

* @param info

* @param apkUrl

private void showUpdateDialog ( final String apkUrl) {

// 普通对对话框

final AlertDialog.Builder builder = new AlertDialog.Builder( context );

alertDialog = builder.create();

LayoutInflater inflater = ((Activity) context ).getLayoutInflater();

final View layout = inflater.inflate(R.layout. dialogversion , null );

// TextView tv_info = (TextView)

// layout.findViewById(R.id.tv_dialoge_info);

Butt on bt_cancle = (Button) layout.findViewById(R.id. bt_cancle_dialog );

Button bt_sure = (Button) layout.findViewById(R.id. bt_sure_dialog );

// tv_info.setText(info);

alertDialog .setView(layout);

alertDialog .setIcon(R.drawable. zc );

// 设置ProgressDialog 是否可以按退回按键取消

alertDialog .setCancelable( false );

// 如果不想让对话框关闭

// builder.setCancelable(false);

// 给对话框设置一个消失的监听

alertDialog .setOnCancelListener( new DialogInterface.OnCancelListener() {

@Override

public void onCancel(DialogInterface dialog) {

}

});

bt_cancle.setOnClickListener( new View.OnClickListener() {

@Override

public void onClick(View view) {

// TODO 点击的是(暂不更新)

alertDialog .dismiss();

}

});

bt_sure.setOnClickListener( new View.OnClickListener() {

@Override

public void onClick(View view) {

// TODO 点击的是(立即更新)

alertDialog .dismiss();

// 去下载

// 自己 NoHttp // 从哪下下到哪

downloadApk(apkUrl);

}

});

alertDialog .show();

}

3.1 dialogversion布局

<? xml version = "1.0" encoding = "utf-8" ?>

< LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android";

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:layout_marginLeft = "50dp"

android:layout_marginRight = "50dp"

android:background = "@drawable/shape_dialoge"

android:orientation = "vertical" >

< TextView

android:id = "@+id/tv_dialoge_title"

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:layout_margin = "10dp"

android:text = "检测到新版本"

android:textColor = "@color/black"

android:gravity = "center"

android:textSize = "20dp" />

< ImageView

android:layout_width = "match_parent"

android:layout_height = "1dp"

android:background = "#3EB3F9" />

<!-- <TextView

android:id="@+id/tv_content_title"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="5dp"

android:text="更新内容："

android:textColor="@color/black"

android:textSize="18dp" />

<TextView

android:id="@+id/tv_dialoge_info"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="10dp"

android:text="XXXXXXXXXXXXXX "

android:textColor="@color/black"

android:textSize="16dp" /> -->

< ImageView

android:layout_width = "match_parent"

android:layout_height = "1dp"

android:background = "#3EB3F9" />

< LinearLayout

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:orientation = "horizontal" >

< Button

android:id = "@+id/bt_cancle_dialog"

android:layout_width = "0dp"

android:layout_height = "wrap_content"

android:layout_weight = "100"

android:background = "#fff"

android:text = "暂不更新"

android:textColor = "#919191"

android:textSize = "20dp" />

< ImageView

android:layout_width = "0dp"

android:layout_height = "match_parent"

android:layout_weight = "1"

android:background = "#3EB3F9" />

< Button

android:id = "@+id/bt_sure_dialog"

android:layout_width = "0dp"

android:layout_height = "wrap_content"

android:layout_weight = "100"

android:background = "#fff"

android:text = "立即更新"

android:textColor = "#3EB3F9"

android:textSize = "20dp" />

</ LinearLayout >

3.2 zc样式

<? xml version = "1.0" encoding = "utf-8" ?>

< layer-list xmlns:android = " http://schemas.android.com/apk/res/android" ; >

< item >

< shape >

< solid android:color = "#dddddd" />

</ shape >

</ item >

< item

android:left = "1dp"

android:right = "1dp"

android:top = "1dp"

android:bottom = "1dp" >

< shape >

< solid android:color = "#f4f4f4" />

</ shape >

</ item >

</ layer-list >

4.下载appk过程

private AlertDialog pd ;

private void downloadApk(String apkurl) {

// 下载维护的线程池数

DownloadQueue downloadQueue = NoHttp. newDownloadQueue ();

Log. i ( "sdcard--" , MyResource. DOWNLOAD_PATH );

// 下载请求

DownloadRequest downloadRequest = NoHttp. createDownloadRequest (apkurl,

RequestMethod. GET , MyResource. DOWNLOAD_PATH ,

"example.apk" , true , true );

// 下载请求添加在下载队列里

downloadQueue.add(3, downloadRequest, new DownloadListener() {

private ProgressBar pb_progress ;

private TextView tv_max ;

private TextView tv_progress ;

public long allCount ;

@Override

public void onDownloadError( int what, Exception exception) {

Toast. makeText ( context , "服务器忙，下载失败" , Toast. LENGTH_SHORT ).show();

Toast. makeText ( context , exception.getMessage(),

Toast. LENGTH_SHORT ).show();

// 对话框消失掉

if ( pd != null ) {

pd .dismiss();

}

@Override

public void onStart( int what, boolean isResume, long rangeSize,

Headers responseHeaders, long allCount) {

this . allCount = allCount;

final AlertDialog.Builder builder = new AlertDialog.Builder(

context );

pd = builder.create();

LayoutInflater inflater = ((Activity) context )

.getLayoutInflater();

final View layout = inflater.inflate(R.layout. dialog_download ,

null );

tv_progress = (TextView) layout.findViewById(R.id. tv_progress );

tv_max = (TextView) layout.findViewById(R.id. tv_max );

pb_progress = (ProgressBar) layo ut

.findViewById(R.id. pb_progress );

pd .setView(layout);

DecimalFormat df = new DecimalFormat( "##.##" );

tv_max .setText(df.format((allCount / 1024.00 / 1024.00)) + "M" );

pd .setCancelable( false );

pb_progress .setMax(100);

pd .show();

}

@Override

public void onProgress( int what, int progress, long fileCount) {

//正在下载

// 更新进度条

pb_progress .setProgress(progress);

DecimalFormat df = new DecimalFormat( "##.##" );

tv_progress .setText(df.format(( double ) progress

* ( allCount / 1024.00 / 1024.00 / 100.00))

+ "M" );

}

@Override

public void onFinish( int what, String filePath) {

// 下载完成

// 对话框消失掉

if ( pd != null ) {

pd .dismiss();

}

ToastUtils. toast ( context , "下载成功" );

Intent intent = new Intent();

intent.setAction( "android.intent.action.VIEW" );

intent.setDataAndType(

Uri. parse ( "file://" + MyResource. DOWNLOAD_PATH

+ "/example.apk" ),

"application/vnd.android.package-archive" );

// 开启B同时还要索要结果

startActivityForResult(intent, REQUEST_FOR_INSTALL );

}

@Override

public void onCancel( int what) {

// TODO Auto-generated method stub

// 对话框消失掉

if ( pd != null ) {

pd .dismiss();

}

});

}

4.1 MyResource工具类

/**

* 用来存放一些公用的资源比如下载的路径

* @author Administrator

public class MyResource {

// 我们将跟我们软件相关的所有的文件放在 sd 卡的同一个路径下

//apk名字

private static final String ROOT = "example" ;

// / mnt / sdcard /example

public static final String ROOT_PATH = Environment. getExternalStorageDirectory ().getPath()+ "/" + ROOT ;

// 这个目录只跟下载的东西相关

// / mnt / sdcard /example/download

public static final String DOWNLOAD_PATH = ROOT_PATH + "/download" ;

}

4.2 dialog_download布局

<? xml version = "1.0" encoding = "utf-8" ?>

< LinearLayout xmlns:android = " http://schemas.android.com/apk/res/android" ;

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:background = "#fff"

android:orientation = "vertical" >

< TextView

android:id = "@+id/tv_dialoge_title"

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:layout_margin = "10dp"

android:text = "下载中。。。"

android:gravity = "center"

android:textSize = "20dp" />

< ImageView

android:layout_width = "match_parent"

android:layout_height = "@dimen/x1"

android:background = "#20abff" />

< ProgressBar

android:id = "@+id/pb_progress"

style = "?android:attr/progressBarStyleHorizontal"

android:layout_width = "match_parent"

android:layout_height = "20dp"

android:progressDrawable="@drawable/progressbar_background"

android:layout_marginBottom = "5dp"

android:layout_marginRight = "20dp"

android:layout_marginLeft = "20dp"

android:layout_marginTop = "20dp"

< LinearLayout

android:layout_marginBottom = "10dp"

android:layout_width = "match_parent"

android:layout_height = "wrap_content"

android:gravity = "right"

android:orientation = "horizontal" >

< LinearLayout

android:layout_marginRight = "40dp"

android:orientation = "horizontal"

android:layout_width = "wrap_content"

android:layout_height = "wrap_content" >

< TextView

android:id = "@+id/tv_progress"

android:layout_width = "wrap_content"

android:layout_height = "wrap_content"

android:text = "3M"

android:textSize = "16dp" />

< TextView

android:layout_width = "wrap_content"

android:layout_height = "wrap_content"

android:text = " / "

android:textSize = "16dp" />

< TextView

android:id = "@+id/tv_max"

android:layout_width = "wrap_content"

android:layout_height = "wrap_content"

android:text = "5M"

android:textSize = "16dp" />

</ LinearLayout >

4.3 @drawable/progressbar_background 布局

<? xml version = "1.0" encoding = "utf-8" ?>

< layer-list xmlns:android = " http://schemas.android.com/apk/res/android" ; >

< item android:id = "@android:id/background" >

< shape >

< corners android:radius = "5dp" />

< solid android:color = "#A5D1DB" /> //这个颜色是pro gressbar的背景颜色

</ shape >

</ item >

< item android:id = "@android:id/progress" >

< clip >

< shape >

< corners android:radius = "5dp" />

< solid android:color = "#1E90FF" /> //这个颜色是progressbar的进度颜色

</ shape >

</ clip >

</ item >

</ layer-list >

4.4 在这获取B界面的结果回传。

protected static final int REQUEST_FOR_INSTALL = 1;

// 在这获取B界面的结果回传

@Override

public void onActivityResult( int requestCode, int resultCode, Intent data) {

if (requestCode == REQUEST_FOR_INSTALL ) {

// 说明是我们的界面回传

// 如果以后再开启系统的一个界面这个界面包含取消和确定我想知道点的是取消还是确定做法都是通用的

if (resultCode == REQUEST_FOR_INSTALL ) {

// 说明用户点击确定

System. out .println( "点击ok" );

} else {

// 说明用户点击取消

Log. i ( "onActivityResult" , "安装取消" );

// TODO 跳转至首页

Intent intent = new Intent();

intent.setClass( context , MainAct. class );

startActivity(intent);

}

Android笔记之版本更新

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