安卓app自动更新功能完美实现

科技2022-08-13 117

安卓app自动更新功能完美实现白云飘絮

示例：

零、准备工作

0.1第三方库

implementation ‘io.reactivex.rxjava2:rxjava:2.2.2’ implementation ‘io.reactivex.rxjava2:rxandroid:2.1.0’ implementation ‘io.reactivex.rxjava2:rxkotlin:2.3.0’ implementation ‘com.squareup.okhttp3:okhttp:3.11.0’ implementation ‘com.squareup.okio:okio:2.0.0’

0.2权限

<uses-permission android:name="android.permission.INTERNET" />  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

0.3格式

“Code”: 0, “Msg”: “”, “UpdateStatus”: 1, “VersionCode”: 3, “VersionName”: “1.0.2”, “ModifyContent”: “1、优化api接口。\r\n2、添加使用demo演示。\r\n3、新增自定义更新服务API接口。\r\n4、优化更新提示界面。”, “DownloadUrl”: “https://raw.githubusercontent.com/xuexiangjys/XUpdate/master/apk/xupdate_demo_1.0.2.apk”, “ApkSize”: 2048 “ApkMd5”: “…” //md5值没有的话，就无法保证apk是否完整，每次都会重新下载。

一、检测是否是最新版本，不是则更新

private Disposable downDisposable; private ProgressBar progressBar; private TextView textView4; private Button upgrade; private long downloadLength=0; private long contentLength=0; private String[] PERMISSIONS_STORAGE = { Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};

//判断版本是否最新，如果不是最新版本则更新

private void test(){ Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> emitter) throws Exception { OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url("url") .build(); client.newCall(request).enqueue(new okhttp3.Callback() { @Override public void onFailure(Call call, IOException e) { emitter.onError(e); } @Override public void onResponse(Call call, Response response) throws IOException { String result=""; if (response.body()!=null) { result=response.body().string(); }else { //返回数据错误 return; } emitter.onNext(result); } }); // emitter.onNext("123"); } }).subscribeOn(Schedulers.io())// 将被观察者切换到子线程 .observeOn(AndroidSchedulers.mainThread())// 将观察者切换到主线程 .subscribe(new Observer<String>() { private Disposable mDisposable; @Override public void onSubscribe(Disposable d) { mDisposable = d; } @Override public void onNext(String result) { if (result.isEmpty()){ return; } //2.判断版本是否最新，如果不是最新版本则更新 String downloadUrl="https://raw.githubusercontent.com/xuexiangjys/XUpdate/master/apk/xupdate_demo_1.0.2.apk"; String title="是否升级到4.1.1版本？"; String size="新版本大小：未知"; String msg="1、优化api接口。\r\n2、添加使用demo演示。\r\n3、新增自定义更新服务API接口。\r\n4、优化更新提示界面。"; int versionCode=20000; try { int version = getPackageManager(). getPackageInfo(getPackageName(), 0).versionCode; if (versionCode>version){ LayoutInflater inflater = LayoutInflater.from(TestActivity.this); View view = inflater.inflate(R.layout.layout_dialog, null); AlertDialog.Builder mDialog = new AlertDialog.Builder(TestActivity.this,R.style.Translucent_NoTitle); mDialog.setView(view); mDialog.setCancelable(true); mDialog.setOnKeyListener(new DialogInterface.OnKeyListener() { @Override public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) { return keyCode == KeyEvent.KEYCODE_BACK; } }); upgrade= view.findViewById(R.id.button); TextView textView1= view.findViewById(R.id.textView1); TextView textView2= view.findViewById(R.id.textView2); TextView textView3= view.findViewById(R.id.textView3); textView4= view.findViewById(R.id.textView4); ImageView iv_close= view.findViewById(R.id.iv_close); progressBar= view.findViewById(R.id.progressBar); progressBar.setMax(100); textView1.setText(title); textView2.setText(size); textView3.setText(msg); upgrade.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //动态询问是否授权 int permission = ActivityCompat.checkSelfPermission(getApplication(), Manifest.permission.WRITE_EXTERNAL_STORAGE); if (permission != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(TestActivity.this, PERMISSIONS_STORAGE, 1); }else { upgrade.setVisibility(View.INVISIBLE); down(downloadUrl); } } }); iv_close.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { finish(); } }); mDialog.show(); }else { } } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } mDisposable.dispose(); } @Override public void onError(Throwable e) { test(); } @Override public void onComplete() { } }); }

//下载apk并更新进度条

private void down(String downloadUrl){ Observable.create(new ObservableOnSubscribe<Integer>() { @Override public void subscribe(ObservableEmitter<Integer> emitter) throws Exception { downApk(downloadUrl,emitter); } }).subscribeOn(Schedulers.io())// 将被观察者切换到子线程 .observeOn(AndroidSchedulers.mainThread())// 将观察者切换到主线程 .subscribe(new Observer<Integer>() { @Override public void onSubscribe(Disposable d) { downDisposable = d; } @Override public void onNext(Integer result) { //设置ProgressDialog 进度条进度 progressBar.setProgress(result); textView4.setText(result+"%"); } @Override public void onError(Throwable e) { Toast.makeText(getApplication(),"网络异常！请重新下载！",Toast.LENGTH_SHORT).show(); upgrade.setEnabled(true); } @Override public void onComplete() { Toast.makeText(getApplication(),"服务器异常！请重新下载！",Toast.LENGTH_SHORT).show(); upgrade.setEnabled(true); } }); }

二、下载apk

//下载apk

private void downApk(String downloadUrl,ObservableEmitter<Integer> emitter){ OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url(downloadUrl) .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { //下载失败 breakpoint(downloadUrl,emitter); } @Override public void onResponse(Call call, Response response) throws IOException { if (response.body() == null) { //下载失败 breakpoint(downloadUrl,emitter); return; } InputStream is = null; FileOutputStream fos = null; byte[] buff = new byte[2048]; int len; try { is = response.body().byteStream(); File file = createFile(); fos = new FileOutputStream(file); long total = response.body().contentLength(); contentLength=total; long sum = 0; while ((len = is.read(buff)) != -1) { fos.write(buff,0,len); sum+=len; int progress = (int) (sum * 1.0f / total * 100); //下载中，更新下载进度 emitter.onNext(progress); downloadLength=sum; } fos.flush(); //4.下载完成，安装apk installApk(TestActivity.this,file); } catch (Exception e) { e.printStackTrace(); breakpoint(downloadUrl,emitter); } finally { try { if (is != null) is.close(); if (fos != null) fos.close(); } catch (Exception e) { e.printStackTrace(); } } } }); }

//断点续传

private void breakpoint(String downloadUrl,ObservableEmitter<Integer> emitter){ OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url(downloadUrl) .addHeader("RANGE", "bytes=" + downloadLength + "-" + contentLength) .build(); client.newCall(request).enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { //下载失败 breakpoint(downloadUrl,emitter); } @Override public void onResponse(Call call, Response response) throws IOException { if (response.body() == null) { //下载失败 breakpoint(downloadUrl,emitter); return; } InputStream is = null; RandomAccessFile randomFile = null; byte[] buff = new byte[2048]; int len; try { is = response.body().byteStream(); String root = Environment.getExternalStorageDirectory().getPath(); File file = new File(root,"updateDemo.apk"); randomFile = new RandomAccessFile(file, "rwd"); randomFile.seek(downloadLength); long total = contentLength; long sum = downloadLength; while ((len = is.read(buff)) != -1) { randomFile.write(buff,0,len); sum+=len; int progress = (int) (sum * 1.0f / total * 100); //下载中，更新下载进度 emitter.onNext(progress); downloadLength=sum; } //4.下载完成，安装apk installApk(TestActivity.this,file); } catch (Exception e) { e.printStackTrace(); breakpoint(downloadUrl,emitter); } finally { try { if (is != null) is.close(); if (randomFile != null) randomFile.close(); } catch (Exception e) { e.printStackTrace(); } } } }); }

/**

路径为根目录创建文件名称为 updateDemo.apk */ private File createFile() { String root = Environment.getExternalStorageDirectory().getPath(); File file = new File(root,"updateDemo.apk"); if (file.exists()) file.delete(); try { file.createNewFile(); return file; } catch (IOException e) { e.printStackTrace(); } return null ; } 1234567891011121314

三、安装apk

3.1项目的src/res新建个xml文件夹再自定义一个file_paths文件

<?xml version="1.0" encoding="utf-8"?> <paths xmlns:android="http://schemas.android.com/apk/res/android"> <files-path name="name1" path="test1" /> </paths>

3.2在清单文件中配置

3.3安装apk

//安装apk，包含7.0

public void installApk(Context context, File file) { if (context == null) { return; } String authority = getApplicationContext().getPackageName() + ".fileProvider"; Uri apkUri = FileProvider.getUriForFile(context, authority, file); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); //判读版本是否在7.0以上 if (Build.VERSION.SDK_INT >= 24) { intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.setDataAndType(apkUri, "application/vnd.android.package-archive"); } else { intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive"); } context.startActivity(intent); //弹出安装窗口把原程序关闭。 //避免安装完毕点击打开时没反应 Process.killProcess(android.os.Process.myPid()); }

四、取消订阅

@Override protected void onDestroy() { super.onDestroy(); downDisposable.dispose();//取消订阅 }

五、自定义Dialog

5.1UI

见一、检测是否是最新版本，不是则更新

5.2布局

<?xml version="1.0" encoding="utf-8"?> 1

<android.support.constraint.ConstraintLayout xmlns:android=“http://schemas.android.com/apk/res/android” xmlns:app=“http://schemas.android.com/apk/res-auto” xmlns:tools=“http://schemas.android.com/tools” android:layout_width=“match_parent” android:layout_height=“match_parent”>

</android.support.constraint.ConstraintLayout>

5.3其他文件

5.3.1textview_round_red.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android">  <solid android:color="#E94339" />  <stroke android:width="1dip" android:color="#E94339" />  <corners android:bottomRightRadius="5dp" android:topRightRadius="5dp" android:bottomLeftRadius="5dp" android:topLeftRadius="5dp"/> </shape >

5.3.2lib_update_app_info_bg.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp"/> <solid android:color="@android:color/white"/> </shape>

5.3.3styles文件

5.4图片

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