写外部存储即sdcard的权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>打开关闭sdcard的权限<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"></uses-permission>
调试欢乐多
01-01 00:03:12.760: WARN/System.err(977): java.io.FileNotFoundException: /mnt/sdcard/test.zip (Permission denied)
01-01 00:03:12.770: WARN/System.err(977): at org.apache.harmony.luni.platform.OSFileSystem.openImpl(Native Method)
01-01 00:03:12.770: WARN/System.err(977): at org.apache.harmony.luni.platform.OSFileSystem.open(OSFileSystem.java:152)
01-01 00:03:12.770: WARN/System.err(977): at java.io.FileInputStream.<init>(FileInputStream.java:82)
01-01 00:03:12.770: WARN/System.err(977): at java.io.FileInputStream.<init>(FileInputStream.java:134)
01-01 00:03:12.770: WARN/System.err(977): at com.android.server.MasterClearUpdateReceiver.copy(MasterClearUpdateReceiver.java:50)
01-01 00:03:12.770: WARN/System.err(977): at com.android.server.MasterClearUpdateReceiver.onReceive(MasterClearUpdateReceiver.java:32)
01-01 00:03:12.770: WARN/System.err(977): at android.app.ActivityThread.handleReceiver(ActivityThread.java:2810)
01-01 00:03:12.770: WARN/System.err(977): at android.app.ActivityThread.access$3200(ActivityThread.java:125)
01-01 00:03:12.780: WARN/System.err(977): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2083)
01-01 00:03:12.780: WARN/System.err(977): at android.os.Handler.dispatchMessage(Handler.java:99)
01-01 00:03:12.780: WARN/System.err(977): at android.os.Looper.loop(Looper.java:123)
01-01 00:03:12.780: WARN/System.err(977): at com.android.server.ServerThread.run(SystemServer.java:512)
<!-- ================================== -->
<!-- Permissions for sdcard interaction -->
<!-- ================================== -->
<eat-comment /> <!-- Group of permissions that are related to SD card access. -->
<permission-group android:name="android.permission-group.STORAGE"
android:label="@string/permgrouplab_storage"
android:description="@string/permgroupdesc_storage" /> <!-- Allows an application to write to external storage -->
<permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
android:permissionGroup="android.permission-group.STORAGE"
android:label="@string/permlab_sdcardWrite"
android:description="@string/permdesc_sdcardWrite"
android:protectionLevel="dangerous" />copy("/mnt/sdcard/test.zip", "/mnt/sdcard/test1.zip"); 在sdcard中会生成test1.zip的
不能阿。。nvidia的bootloader要有一定要把update.zip放在/cache里面才能升级