之前項目有需求做app內更新,試了很多都不行,最後自己結合網上找到的資料,自己寫了一個工具類,兼容Android7.0,有問題的話歡迎留言。二話不說直接上代碼吧
/** * 2018-01-09 haoshiwei * app內部更新的工具類 * 兼容7.0 */ public class DownloadUtils { //下載器 private DownloadManager downloadManager; //上下文 private Context mContext; //下載的ID private long downloadId; public DownloadUtils(Context context){ this.mContext = context; } //下載apk public void downloadAPK(String url, String name) { //創建下載任務 DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); //移動網絡情況下是否允許漫遊 request.setAllowedOverRoaming(false); //在通知欄中顯示,默認就是顯示的 request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE); request.setTitle("狐小狸"); request.setDescription("Apk Downloading"); request.setVisibleInDownloadsUi(true); //設置下載的路徑 request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS , name); //獲取DownloadManager downloadManager = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE); //將下載請求加入下載隊列,加入下載隊列後會給該任務返回一個long型的id,通過該id可以取消任務,重啓任務、獲取下載的文件等等 downloadId = downloadManager.enqueue(request); //註冊廣播接收者,監聽下載狀態 mContext.registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); } //廣播監聽下載的各個狀態 private BroadcastReceiver receiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { checkStatus(); } }; //檢查下載狀態 private void checkStatus() { DownloadManager.Query query = new DownloadManager.Query(); //通過下載的id查找 query.setFilterById(downloadId); Cursor c = downloadManager.query(query); if (c.moveToFirst()) { int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS)); switch (status) { //下載暫停 case DownloadManager.STATUS_PAUSED: break; //下載延遲 case DownloadManager.STATUS_PENDING: break; //正在下載 case DownloadManager.STATUS_RUNNING: break; //下載完成 case DownloadManager.STATUS_SUCCESSFUL: //下載完成安裝APK installAPK(); break; //下載失敗 case DownloadManager.STATUS_FAILED: Toast.makeText(mContext, "下載失敗", Toast.LENGTH_SHORT).show(); break; } } c.close(); }
//下載到本地後執行安裝 private void installAPK() { //獲取下載文件的Uri Uri downloadFileUri = downloadManager.getUriForDownloadedFile(downloadId); if (downloadFileUri != null) { Intent intent= new Intent(Intent.ACTION_VIEW); intent.setDataAndType(downloadFileUri, "application/vnd.android.package-archive"); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mContext.startActivity(intent); mContext.unregisterReceiver(receiver); } }}
這裏使用了Android自帶的downloadManager,但是有一個 問題就是在Android7.0以上的手機不兼容。
/** * 7.0兼容 */ private void installAPK() { File apkFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "huxiaoli.apk"); Intent intent = new Intent(Intent.ACTION_VIEW); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); if (Build.VERSION.SDK_INT >= 24) { Uri apkUri = FileProvider.getUriForFile(mContext, mContext.getPackageName() + ".provider", apkFile); intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.setDataAndType(apkUri, "application/vnd.android.package-archive"); } else { intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive"); } mContext.startActivity(intent); }這裏我們在7.0以上的手機上使用file.provider要在manifest文件裏面配置一下
<provider android:name="android.support.v4.content.FileProvider" android:authorities="你的包名.provider" android:exported="false" android:grantUriPermissions="true"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/provider_paths"/> </provider>在drawable目錄下創建xml包下面創建provider_paths文件
<?xml version="1.0" encoding="utf-8"?> <resources xmlns:android="http://schemas.android.com/apk/res/android"> <paths> <external-path name="download" path=""/> </paths> </resources>這樣就大功告成了,有問題的話歡迎留言