Android格式化外部设备如USB等
16lz
2021-01-24
最主要的方法
/** * @Description 格式化 * @param path 路径 * @return true success ;false failure */ public boolean formatMedia(final String path) { IMountService mountService = getMountService(); int result = 0; try { //当卸载完sdcard后才能格式化sdcard - sdcard can be formatted only after the sdcard is unloaded mountService.unmountVolume(path, true, false); //给sdcard卸载的时间不能超过5s，超过5s后iMountService.formatVolume()不起作用。 Thread.sleep(4 * 1000); result = mountService.formatVolume(path); //这步就是格式化 Log.d(TAG, "---------volume's path is " + path + "------format success ? " + result); if (result == 0) { //如果成功卸载 Thread.sleep(4 * 1000); int resultMount = mountService.mountVolume(path); //挂载回去 Log.d(TAG, "---------result_mount " + resultMount); //挂载结果 } } catch (Exception ex) { ex.printStackTrace(); } if (result != 0) { return true; } return false; } /** * @Description 得到IMountService * @return IMountService */ public synchronized IMountService getMountService() { if (mMountService == null) { IBinder iBinder = ServiceManager.getService("mount"); if (iBinder != null) { mMountService = IMountService.Stub.asInterface(iBinder); if (mMountService == null) { Log.e(TAG, "Unable to connect to mount service! - is it running yet?"); } } } return mMountService; }注意import
import android.os.IBinder;import android.os.storage.IMountService;import android.os.ServiceManager;如果是要格式化所有设备，则可以用固有方法StorageVolume[] volumes = mountService.getVolumeList();获取储存信息，再用每一个volume.getPath();获得所有路径。
/** * @Description format all the device */ public void formatMediaAll() { IMountService mountService = getMountService(); try { StorageVolume[] volumes = mountService.getVolumeList(); for (StorageVolume volume : volumes) { formatMedia(volume.getPath()); } } catch (Exception e) { e.printStackTrace(); } }注意import
import android.os.storage.StorageVolume;上述代码验证有效，但是注意只能在源码中编译，直接在eclipse中写会报错，无法编译通过。
如何在源码编译
前提条件：服务器有源码可编译
CRT命令： 快速压缩：tar xvzf 压缩包名 快速删除：rm 快速重命名：mv 文件名.后缀 新文件名.后缀首先要编译一下SDK（第一次需要，以后不需要）
1.进入源码目录
cd xxxxxxxxxxx/
2.整体编译SDK
source autocompile.sh
然后编译APP
1.从SecureCRT登陆服务器后,先切换到源码目录
cd xxxxxxxxxxx/
2.配置环境
source build/envsetup.sh
lunch XXXXXX-eng
注：以上步骤每次登陆编译机器，切换shell后，都需要执行上述操作配置环境变量
3.切换到项目文件夹，项目需包含配置好相关信息的Android.mk，并去掉bin包和gen包等无用信息，否则编译不通过
cd packages/apps/MyProjectName/
4.运行
mm
5.去输出文件夹找到apk
../out/target/product/XXXDevice/system/app/MyProject.apk
附件：完整代码VolumeManager.java
/****************************************************************** * * @author: AZZ * * @version: 1.0.0 * * Create at: 2015年6月8日 下午4:45:22 * * Revision: * * 2015年6月8日 下午4:45:22 * - first revision * *****************************************************************/import android.content.Context;import android.os.IBinder;import android.os.storage.IMountService;import android.os.ServiceManager;import android.os.storage.StorageManager;import android.os.storage.StorageVolume;import android.os.storage.StorageEventListener;import android.util.Log;/** * @ClassName VolumeManager * @Description 管理格式化的类 * @author AZZ * @Date 2015年6月8日 下午4:45:22 * @version 1.0.0 */public final class VolumeManager { /** * @Field @TAG : TAG */ public static final String TAG = VolumeManager.class.getSimpleName(); /** * @Field @mMountService : mMountService */ private IMountService mMountService; /** * @Field @unloadedDuration : unloaded device duration */ private final int unloadedDuration = 4 * 1000; /** * @Field @mStorageManager : 存储管理者 */ private StorageManager mStorageManager; /** * @Field @mStorageListener : 监听存储状态改变事件 */ private StorageEventListener mStorageListener = new StorageEventListener() { @Override public void onStorageStateChanged(final String path, final String oldState, final String newState) { Log.i(TAG, "Received storage state changed notification that \"" + path + "\" changed state from [" + oldState + "] to [" + newState + "]"); } }; /** * @Description init * @param context context */ public VolumeManager(final Context context) { mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE); mStorageManager.registerListener(mStorageListener); } /** * @Description 格式化 * @param path 路径 * @return true success ;false failure */ public boolean formatMedia(final String path) { IMountService mountService = getMountService(); int result = 0; try { //当卸载完sdcard后才能格式化sdcard - sdcard can be formatted only after the sdcard is unloaded mountService.unmountVolume(path, true, false); //给sdcard卸载的时间不能超过5s，超过5s后iMountService.formatVolume()不起作用。 Thread.sleep(unloadedDuration); result = mountService.formatVolume(path); Log.d(TAG, "---------volume's path is " + path + "------format success ? " + result); if (result == 0) { Thread.sleep(unloadedDuration); int resultMount = mountService.mountVolume(path); //挂载回去 Log.d(TAG, "---------result_mount " + resultMount); } } catch (Exception ex) { ex.printStackTrace(); } if (result != 0) { return true; } return false; } /** * @Description format all the device */ public void formatMediaAll() { IMountService mountService = getMountService(); try { StorageVolume[] volumes = mountService.getVolumeList(); for (StorageVolume volume : volumes) { boolean result = formatMedia(volume.getPath()); } } catch (Exception e) { e.printStackTrace(); } } /** * @Description 得到IMountService * @return IMountService */ public synchronized IMountService getMountService() { if (mMountService == null) { IBinder iBinder = ServiceManager.getService("mount"); if (iBinder != null) { mMountService = IMountService.Stub.asInterface(iBinder); if (mMountService == null) { Log.e(TAG, "Unable to connect to mount service! - is it running yet?"); } } } return mMountService; } /** * @Description 销毁方法 */ public void destroy() { if (mStorageManager != null) { mStorageManager.unregisterListener(mStorageListener); } }}更多相关文章
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