打开下载的 PDF 文件
Opening a downloaded PDF file
我正在尝试使用 FileProvider 通过隐式意图打开下载的 pdf 文件。
我正在使用 DownloadManager 从远程服务器下载 pdf 文件,它工作正常。哪个存储在它的目的地。
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(DownloadURL));
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(false);
request.setTitle(mFilename);
request.setDescription("Downloading...");
request.setVisibleInDownloadsUi(true);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
下载完成后我想打开它。
public void OpenPdfFile(){
File sharedFile = new File(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri uri = FileProvider.getUriForFile(mContext, BuildConfig.APPLICATION_ID+ ".provider", sharedFile);
intent.setDataAndType(uri, "application/pdf");
PackageManager pm = mContext.getPackageManager();
if (intent.resolveActivity(pm) != null) {
mContext.startActivity(intent);
}
}
在清单文件中
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
和provider_paths.xml一样
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external-path" path="." />
</paths>
我遇到了这个错误
java.lang.IllegalArgumentException:找不到包含 /Download/FOLDER_NAME/demo_presentationfile.PDF
的已配置根目录
有什么建议吗?
File sharedFile = new File(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
评估为不可能的文件系统路径。如果您检查 sharedFile.getAbsolutePath()
.
的值,您会看到
更改为:
File sharedFile = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS), "FOLDER_NAME/" + mFilename);
我正在尝试使用 FileProvider 通过隐式意图打开下载的 pdf 文件。
我正在使用 DownloadManager 从远程服务器下载 pdf 文件,它工作正常。哪个存储在它的目的地。
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(DownloadURL));
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(false);
request.setTitle(mFilename);
request.setDescription("Downloading...");
request.setVisibleInDownloadsUi(true);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
下载完成后我想打开它。
public void OpenPdfFile(){
File sharedFile = new File(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri uri = FileProvider.getUriForFile(mContext, BuildConfig.APPLICATION_ID+ ".provider", sharedFile);
intent.setDataAndType(uri, "application/pdf");
PackageManager pm = mContext.getPackageManager();
if (intent.resolveActivity(pm) != null) {
mContext.startActivity(intent);
}
}
在清单文件中
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths"/>
</provider>
和provider_paths.xml一样
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
<external-path name="external-path" path="." />
</paths>
我遇到了这个错误
java.lang.IllegalArgumentException:找不到包含 /Download/FOLDER_NAME/demo_presentationfile.PDF
的已配置根目录有什么建议吗?
File sharedFile = new File(Environment.DIRECTORY_DOWNLOADS, "/FOLDER_NAME/" + mFilename);
评估为不可能的文件系统路径。如果您检查 sharedFile.getAbsolutePath()
.
更改为:
File sharedFile = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS), "FOLDER_NAME/" + mFilename);