Java 我的应用程序因权限拒绝而崩溃
我的Android应用程序有问题。我正在请求用户访问READ_外部_存储的权限，但“权限拒绝”错误仍然使我的应用程序崩溃 我花了好几个小时在这上面，但我不知道如何修复它 这是我的日志：Java 我的应用程序因权限拒绝而崩溃,java,android,android-permissions,Java,Android,Android Permissions,我的Android应用程序有问题。我正在请求用户访问READ_外部_存储的权限，但“权限拒绝”错误仍然使我的应用程序崩溃 我花了好几个小时在这上面，但我不知道如何修复它 这是我的日志： 03-07 15:02:12.387 6800-8893/? E/DatabaseUtils: Writing exception to parcel java.lang.SecurityException: Permission Denial: reading com.android.provider
03-07 15:02:12.387 6800-8893/? E/DatabaseUtils: Writing exception to parcel
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=8108, uid=10089 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.content.ContentProvider.enforceReadPermissionInner(ContentProvider.java:605)
at android.content.ContentProvider$Transport.enforceReadPermission(ContentProvider.java:480)
at android.content.ContentProvider$Transport.query(ContentProvider.java:211)
at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:112)
at android.os.Binder.execTransact(Binder.java:453)
03-07 15:02:12.391 8108-11729/? E/iu.UploadsManager: Insufficient permissions to process media
java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=8108, uid=10089 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.os.Parcel.readException(Parcel.java:1602)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
at android.content.ContentResolver.query(ContentResolver.java:502)
at android.content.ContentResolver.query(ContentResolver.java:438)
at lqt.a(PG:14)
at com.google.android.libraries.social.autobackup.FingerprintScannerIntentService.onHandleIntent(PG:15)
at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:66)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:150)
at android.os.HandlerThread.run(HandlerThread.java:61)
package com.example.arjufy;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.Manifest;
import android.support.v4.app.ActivityCompat;
import android.widget.Toast;
import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
public class MainActivity extends AppCompatActivity implements MarketPlaceFragment.OnListFragmentInteractionListener {
private FirebaseAuth mFirebaseAuth;
private FirebaseUser mFirebaseUser;
private DatabaseReference mDatabaseReference;
private String mUsername;
private String mPhotoUrl;
public static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 123;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (checkPermissionREAD_EXTERNAL_STORAGE(this)) {
// do your stuff..
// Initialize Firebase Auth
mFirebaseAuth = FirebaseAuth.getInstance();
mFirebaseUser = mFirebaseAuth.getCurrentUser();
if (mFirebaseUser == null) {
// Not signed in, launch the Sign In activity
startActivity(new Intent(this, SplashScreenActivity.class));
finish();
return;
} else {
mUsername = mFirebaseUser.getEmail();
}
mDatabaseReference = FirebaseDatabase.getInstance().getReference();
setContentView(R.layout.activity_main);
Fragment fragment = new MarketPlaceFragment();
getSupportFragmentManager().beginTransaction().replace(R.id.theFragmentFrame, fragment).addToBackStack("MarketPlaceFragment").commit();
}
}
public boolean checkPermissionREAD_EXTERNAL_STORAGE(
final Context context) {
int currentAPIVersion = Build.VERSION.SDK_INT;
if (currentAPIVersion >= android.os.Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(context,
Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale(
(Activity) context,
Manifest.permission.READ_EXTERNAL_STORAGE)) {
showDialog("External storage", context,
Manifest.permission.READ_EXTERNAL_STORAGE);
} else {
ActivityCompat
.requestPermissions(
(Activity) context,
new String[] { Manifest.permission.READ_EXTERNAL_STORAGE },
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
}
return false;
} else {
return true;
}
} else {
return true;
}
}
public void showDialog(final String msg, final Context context,
final String permission) {
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
alertBuilder.setCancelable(true);
alertBuilder.setTitle("Permission necessary");
alertBuilder.setMessage(msg + " permission is necessary");
alertBuilder.setPositiveButton(android.R.string.yes,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions((Activity) context,
new String[] { permission },
MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
}
});
AlertDialog alert = alertBuilder.create();
alert.show();
}
@Override
public void onRequestPermissionsResult(int requestCode,
String[] permissions, int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE:
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// do your stuff
} else {
Toast.makeText(MainActivity.this, "GET_ACCOUNTS Denied",
Toast.LENGTH_SHORT).show();
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions,
grantResults);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.logoff:
FirebaseAuth.getInstance().signOut();
Intent intent1 = new Intent(this, LoginActivity.class);
startActivity(intent1);
return true;
case R.id.profile:
Intent intent2 = new Intent(this, MyProfileActivity.class);
startActivity(intent2);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onListFragmentInteraction(DatabaseReference reference) {
Intent intent = new Intent(this, ProductDetailViewActivity.class);
intent.putExtra("Product reference", reference.toString());
startActivity(intent);
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.arjufy">
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>``
<activity android:name=".LoginActivity" />
<activity android:name=".SplashScr
eenActivity" />
<activity android:name=".AddProductActivity" />
<activity android:name=".SignUpActivity" />
<activity android:name=".MyProfileActivity" />
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.arjufy"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/path_files" />
</provider>
<activity android:name=".ProductDetailViewActivity" />
</application>
</manifest>
非常感谢 最近，运行时权限实际上有了新的发展。。。就像你需要使用一个文件提供者，提供Uri等等，但是这里有一个我最近使用过的很好的库。它工作良好，无需麻烦。您可以在代码路径上查看它 干杯。来自Android开发者 如果你的应用程序需要一个危险的权限，你必须在每次执行需要该权限的操作时检查你是否拥有该权限。从Android 6.0（API级别23）开始，用户可以随时撤销任何应用程序的权限，即使该应用程序的API级别较低 所以你需要像这样申请许可
@TargetApi(23)
public void enableRunTimePermisstion() {
if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) &&
(getActivity().checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) !=
PackageManager.PERMISSION_GRANTED))
if (getActivity().shouldShowRequestPermissionRationale
(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
Toast.makeText(getActivity(), "Write storage permission is need for app"
, Toast.LENGTH_LONG).show();
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
} else {
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
Toast.makeText(getActivity(), "request permission"
, Toast.LENGTH_LONG).show();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 1) {
if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE) &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(context, "Write external storage granted", Toast.LENGTH_LONG).show();
// >> here you call the method that need the permission
}
} else {
Toast.makeText(getActivity(), "Write external permission denied", Toast.LENGTH_SHORT).show();
enableRunTimePermisstion(); // >> When user request the permission we calling the previous method again.
}
}
您使用的Android版本可能存在重复？请记住，在Android 6中，您必须在运行时获得权限，而不是在安装时
@TargetApi(23)
public void enableRunTimePermisstion() {
if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) &&
(getActivity().checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) !=
PackageManager.PERMISSION_GRANTED))
if (getActivity().shouldShowRequestPermissionRationale
(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
Toast.makeText(getActivity(), "Write storage permission is need for app"
, Toast.LENGTH_LONG).show();
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
} else {
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
Toast.makeText(getActivity(), "request permission"
, Toast.LENGTH_LONG).show();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 1) {
if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE) &&
grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(context, "Write external storage granted", Toast.LENGTH_LONG).show();
// >> here you call the method that need the permission
}
} else {
Toast.makeText(getActivity(), "Write external permission denied", Toast.LENGTH_SHORT).show();
enableRunTimePermisstion(); // >> When user request the permission we calling the previous method again.
}
}