安卓开发实现应用下载完成自动安装升级
时间: 2023-08-05 10:34:52 浏览: 46
要实现安卓应用下载完成自动安装升级,可以通过以下步骤:
1. 在应用中添加权限:android.permission.REQUEST_INSTALL_PACKAGES。这个权限允许应用程序安装其他应用程序。
2. 在应用中添加BroadcastReceiver监听下载完成事件,并在接收到下载完成的广播后,打开安装界面。
3. 在安装界面中调用安装器安装应用程序。
代码示例:
1. 添加权限:
```xml
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
```
2. 添加BroadcastReceiver:
```java
public class ApkInstallReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent != null) {
String action = intent.getAction();
if (!TextUtils.isEmpty(action)) {
if (action.equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
if (downloadId != -1) {
DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
if (downloadManager != null) {
Uri downloadFileUri = downloadManager.getUriForDownloadedFile(downloadId);
if (downloadFileUri != null) {
String downloadFilePath = downloadFileUri.getPath();
installApk(context, downloadFilePath);
}
}
}
}
}
}
}
private void installApk(Context context, String filePath) {
Intent intent = new Intent(Intent.ACTION_VIEW);
File apkFile = new File(filePath);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
Uri contentUri = FileProvider.getUriForFile(context, context.getPackageName() + ".fileprovider", apkFile);
intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
} else {
intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive");
}
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
}
```
3. 注册BroadcastReceiver:
```java
ApkInstallReceiver apkInstallReceiver = new ApkInstallReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
registerReceiver(apkInstallReceiver, intentFilter);
```
注意:在Android 7.0及以上版本,需要使用FileProvider来获取文件Uri,否则会抛出FileUriExposedException异常。