这是我的清单：
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.tdr"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="Escriure"
android:enabled="true" >
</activity>
<activity android:enabled="true" android:name="Llegir"></activity>
</application>
</manifest>
我需要从外部存储器写入和读取文件,但不要使用(¿？)开发工具.哪里有问题？谢谢！
解决方法
Now,in Jelly Bean,we’re getting the “read external storage”
permission. According to Google:READ_EXTERNAL_STORAGE
Provides protected read access to external storage. In Android 4.1 by default all applications still have read access. This will be changed in a future release to require that applications explicitly request read access using this permission. If your application already requests write access,it will automatically get read access as well. There is a new developer option to turn on read access restriction,for developers to test their applications against how Android will behave in the future. So,when you hop into the development options on your Jelly Bean device,don’t be surprised to see this new option. We won’t see the permission in Android 4.1.0,but most likely in 4.1.1,and its intention is to keep your device more secure.
