Android - 使用Media.EXTERNAL_CONTENT_URI查询ContentResolver时的SecurityException

时间:2015-08-10 15:57:05

标签: android

我已经添加了我的AndroidManifest.xml,如下所示,但每次单击Button时都会收到SecurityException。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.root.musictest" >

    <uses-permission android:name="ANDROID.PERMISSION.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="ANDROID.PERMISSION.WRITE_EXTERNAL_STORAGE"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>

</manifest>

按钮侦听器:

private ArrayList<String> names = new ArrayList<String>();
public void findItems(View view) {
Cursor cursor = getContentResolver().query(
    MediaStore.Images.Media.EXTERNAL_CONTENT_URI,null, null, null, null);
while(cursor.moveToNext()) {
    String name = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DISPLAY_NAME));
    names.add(name);
}
list.setAdapter(new ArrayAdapter<String>(MainActivity.this, android.R.id.text1,
            android.R.layout.simple_list_item_1,
            names));
}

日志是:

Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=2506, uid=10083 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
    at android.os.Parcel.readException(Parcel.java:1465)
    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:185)
    at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:137)
    at android.content.ContentProviderProxy.query(ContentProviderNative.java:420)
    at android.content.ContentResolver.query(ContentResolver.java:461)
    at android.content.ContentResolver.query(ContentResolver.java:404)
......

我该如何解决?任何输入都会有所帮助。感谢

1 个答案:

答案 0 :(得分:2)

替换:

<uses-permission android:name="ANDROID.PERMISSION.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="ANDROID.PERMISSION.WRITE_EXTERNAL_STORAGE"/>

使用:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

最重要的是这种情况 - 您正在绊倒Android Studio错误,将您的权限置于全部大写。如果您持有READ_EXTERNAL_STORAGE,AFAIK。

,您也不需要WRITE_EXTERNAL_STORAGE