在我的应用程序中,我有自定义自动下载和安装APK它的工作原理如下
// auto register for the complete download
activity.registerReceiver(onComplete,new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
// Download the file through DownloadManager
String destination = Environment.getExternalStorageDirectory() + "/";
String fileName = "myfile.apk";
destination += fileName;
final Uri uri = Uri.parse("file://" + destination);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(apkUrl));
request.setDescription("description");
request.setTitle("title");
request.setDestinationUri(uri);
final DownloadManager manager = (DownloadManager) activity.getSystemService(Context.DOWNLOAD_SERVICE);
final long downloadId = manager.enqueue(request);
onComplete = new BroadcastReceiver() {
public void onReceive(Context ctxt,Intent intent) {
Intent install = new Intent(Intent.ACTION_VIEW);
// BEFORE working doing this
//install.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//install.setDataAndType(uri,// manager.getMimeTypeForDownloadedFile(downloadId));
// Using file provider it doesnt work
Uri apkUri = FileProvider.getUriForFile(AutoUpdate.this,"com.myapp",file);
install.setDataAndType(apkUri,manager.getMimeTypeForDownloadedFile(downloadId));
activity.startActivity(install);
activity.unregisterReceiver(this);
}
};
Android清单：
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.myapp"
android:exported="false"
android:grantUriPermissions="true">
<Meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
Provider_path(很抱歉由于某种原因因此削减了路径标记)
external-path name=”myfolder” path=”.”/>
当文件完成下载时,会调用onComplete,但是活动不会启动：
No Activity found to handle Intent { act=android.intent.action.VIEW
dat=content://com.myapp/myfolder/myfile.apk
typ=application/vnd.android.package-archive flg=0x4000000 }
使用普通文件时：//确实有效
使用文件提供程序时是否有一些我缺少的东西？活动是否因为找不到文件而无法启动？
我需要额外的许可吗？ (目前我在外部存储上有INTERNET,READ和WRITE)
