调用ActivityCompat.requestPermissions不会打开任何对话框。我已经在这里工作了几天,但未能找到任何有关此主题的答案。我听说过一些错误,但没有具体针对这种情况。
手机版Android版:6.0.1
在测试手机的应用程序设置中接受所有存储权限。应用程序已清除数据两次,以及已卸载和重新安装。
它正在进行requestPermissions()调用。
摇篮:
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '25'
defaultConfig {
applicationId "APPID"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.facebook.android:facebook-android-sdk:4.+'
compile 'com.android.support:appcompat-v7:23.4.0'
compile('com.affectiva.android:affdexsdk:3.1.2')
}
清单文件包括:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="PACKAGE NAME">
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:replace="android:allowBackup,android:label">
<activity
android:name=".LoginActivity"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.facebook.FacebookActivity"
android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
android:label="@string/app_name"/>
<!--android:theme="@android:style/Theme.Translucent.NoTitleBar" -->
<meta-data
android:name="com.facebook.sdk.ApplicationId"
android:value="@string/facebook_app_id" />
<activity
android:name=".ProfileActivity"
android:screenOrientation="portrait"></activity>
<activity android:name=".QuestionOne"></activity>
</application>
最初在这里打电话:
if(loggedIn && friendsNames.size() > 0) {
try{
verifyStoragePermissions(this);
}
catch(Exception e ){
Log.e("LoginActv: Save Block", e.getMessage());
e.getStackTrace();
}
Intent intent = new Intent(this, QuestionOne.class);
intent.putStringArrayListExtra("names",friendsNames);
intent.putStringArrayListExtra("urls", pictureURL);
startActivity(intent);
当然还需要权限。请注意,&#39;权限!= 1&#39; vs&#39; permission!= PackageManager.PERMISSION_GRANTED&#39;因为否则,它不会遇到requestPermissions:
public static void verifyStoragePermissions(Activity activity) {
// Check if we have write permission
int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
Log.e("Permission value", permission + " ");
if (permission != 1) {
Log.e("Permission ask", "Asking, permission not granted");
ActivityCompat.requestPermissions(
activity,
PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE
);
}
}
权限变量如下:
// Storage Permissions
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
最后覆盖onRequestPermissionsResult(),它甚至从未被调用过。
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 200) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.e("PERResult", "Granted");
resultExport file = new resultExport();
file.setUserName(facebookHandler.getUserName());
file.setUserID(facebookHandler.getUserID());
file.addData("friendNames", friendsNames);
saveObject(file, facebookHandler.getUserName());
} else {
Log.e("PERResult", "Denied");
Toast.makeText(getApplicationContext(), "PERMISSION_DENIED", Toast.LENGTH_SHORT).show();
}
}
}
我完全不知道为什么一旦我请求权限就不会弹出对话框。真的很感激任何帮助。
编辑:
两者
int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
和
int permissionCheck = ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
返回0,但尝试保存得到:
open failed: EACCES (Permission denied)
答案 0 :(得分:1)
显然它不需要对话,因为权限存在。但是,它仅仅因为路径错误而拒绝了权限。
来自
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File(Environment.getExternalStorageDirectory().getPath() + name + ".bin")));
到
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(new File(Environment.getExternalStorageDirectory().getPath()+ "/" + name + ".bin")));
第一个示例抛出权限错误。
答案 1 :(得分:0)
看起来应该是这样的
if (permission != PackageManager.PERMISSION_GRANTED) {...}
因为1代表PackageManager.SIGNATURE_NEITHER_SIGNED
答案 2 :(得分:0)