丢失android.support.FILE_PROVIDER_PATHS元数据
丢失android.support.FILE_PROVIDER_PATHS元数据
提问于 2017-08-31 05:22:27
我正在尝试打开我下载并保存在外部存储中的pdf文件。但当我打开我的应用程序，它会崩溃，并显示以下错误；
08-31 00:58:31.304 1807-1807/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: medimanage.corporate.mobile, PID: 1807
java.lang.RuntimeException: Unable to get provider android.support.v4.content.FileProvider: java.lang.IllegalArgumentException: Missing android.support.FILE_PROVIDER_PATHS meta-data
at android.app.ActivityThread.installProvider(ActivityThread.java:5856)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5445)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5384)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1545)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.IllegalArgumentException: Missing android.support.FILE_PROVIDER_PATHS meta-data
at android.support.v4.content.FileProvider.parsePathStrategy(FileProvider.java:586)
at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:557)
at android.support.v4.content.FileProvider.attachInfo(FileProvider.java:375)
at android.app.ActivityThread.installProvider(ActivityThread.java:5853)
at android.app.ActivityThread.installContentProviders(ActivityThread.java:5445)
at android.app.ActivityThread.handleBindApplication(ActivityThread.java:5384)
at android.app.ActivityThread.-wrap2(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1545)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 下面是我的异步任务，在这里我下载了这个pdf文件&尝试打开它。
package myPackageName.common.postData;
public class DownloadFileFromURL extends AsyncTask<String, String, String> {
private ProgressDialog Dialog;
private Context mContext;
private String folder_main; //= "TermCondition";
private String fileName;//= "termCondition.pdf";
String urlString;
public DownloadFileFromURL(Context mContext, String folderName) {
this.mContext = mContext;
this.folder_main = folderName;
Dialog = new ProgressDialog(this.mContext);
}
@Override
protected String doInBackground(String... f_url) {
try {
urlString = f_url[0];
URL url = new URL(f_url[0]);
File folder = new File(Environment.getExternalStorageDirectory(), this.folder_main);
if (folder.exists()) {
folder.mkdirs();
}
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.connect();
InputStream inputStream = urlConnection.getInputStream();
FileOutputStream fileOutputStream = new FileOutputStream(Environment.getExternalStorageDirectory() + "/" + "default.pdf");
int totalSize = urlConnection.getContentLength();
byte[] buffer = new byte[AccessibilityNodeInfoCompat.ACTION_DISMISS];
while (true) {
int bufferLength = inputStream.read(buffer);
if (bufferLength <= 0) {
break;
}
fileOutputStream.write(buffer, 0, bufferLength);
}
fileOutputStream.close();
} catch (FileNotFoundException e) {
FileLog.e(mContext.getClass().getName(), e);
} catch (MalformedURLException e2) {
FileLog.e(mContext.getClass().getName(), e2);
} catch (IOException e3) {
FileLog.e(mContext.getClass().getName(), e3);
}
return null;
}
public void showPdf() {
try {
File file = new File(Environment.getExternalStorageDirectory() + "/" + "default.pdf");
try {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Uri contentUri = FileProvider.getUriForFile(mContext, "medimanage.corporate.mobile.fileprovider", file);
intent.setDataAndType(contentUri, "application/pdf");
} else {
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
}
mContext.startActivity(intent);
} catch (ActivityNotFoundException anfe) {
Toast.makeText(mContext, "No activity found to open this attachment.", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
FileLog.e(mContext.getClass().getName(), e);
}
}
@Override
protected void onPreExecute() {
Dialog.setMessage("Downloading...");
Dialog.setCancelable(false);
Dialog.setCanceledOnTouchOutside(false);
Dialog.show();
}
@Override
protected void onPostExecute(String s) {
this.Dialog.dismiss();
showPdf();
super.onPostExecute(s);
}
}以下是AndroidManifest.xml
<application
...>
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="myPackageName.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDE_PATHS"
android:resource="@xml/provider_paths" />
</provider>
</application>和具有以下代码的provider_paths.xml；
<?xml version="1.0" encoding="utf-8"?>
<paths>
<external-path path="Android/data/" name="files_root" />
<external-path path="." name="external_storage_root" />
</paths>我试图在API 19 & API 25中运行上面的代码，但是在这两种设备中，它都会崩溃。我找不出我哪里出了问题。
回答 11
Stack Overflow用户
回答已采纳
发布于 2018-01-05 15:42:46
在您的AndroidManifest文件中，元数据中有一个小错误：
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS" <-- HERE!!!
android:resource="@xml/provider_paths" />您需要使用FILE_PROVIDER_PATHS而不是FILE_PROVIDE_PATHS。
Stack Overflow用户
发布于 2018-02-13 07:44:58
请在android中执行无效缓存和重新启动功能，很可能会这样做。
在此之后重建并运行您的应用程序。在我的例子中，一切都很好。
Stack Overflow用户
发布于 2017-12-25 08:54:50
好像有些东西被设置错了，编译器没有找到android.support.FILE_PROVIDER_PATHS，因此，它会抛出这个错误，检查gradle文件中的所有设置是否正确，如果您更改了android.support的包，这个异常可能会出现。
修复后，在Android中进行清理、重建或清除并使缓存失效。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/45973746
复制相关文章
相似问题
腾讯云开发者
