android4.4.4 系统格式化256GSD卡
时间: 2024-04-07 22:33:42 浏览: 15
在 Android 4.4.4 系统中,你可以使用以下代码来格式化 256GB 的 SD 卡:
```java
import android.os.Environment;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import java.io.File;
import java.lang.reflect.Method;
public class SDCardUtils {
public static void formatSDCard() {
File sdCard = Environment.getExternalStorageDirectory();
StorageManager storageManager = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
Class<?> storageVolumeClazz = null;
try {
// Get the storage volumes
Method getVolumeList = storageManager.getClass().getMethod("getVolumeList");
Object[] storageVolumes = (Object[]) getVolumeList.invoke(storageManager);
// Iterate through the storage volumes
for (Object storageVolume : storageVolumes) {
// Get the path and check if it matches the SD card path
Method getPath = storageVolume.getClass().getMethod("getPath");
String path = (String) getPath.invoke(storageVolume);
if (path.equals(sdCard.getAbsolutePath())) {
// Get the volume state
Method getState = storageVolume.getClass().getMethod("getState");
String state = (String) getState.invoke(storageVolume);
// Check if the volume is mounted
if ("mounted".equals(state)) {
// Get the volume size
Method getFsUuid = storageVolume.getClass().getMethod("getFsUuid");
String uuid = (String) getFsUuid.invoke(storageVolume);
// Format the SD card with the specified size
Method format = storageManager.getClass().getMethod("format", String.class, int.class);
format.invoke(storageManager, uuid, 256);
}
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
```
请注意,这段代码同样使用了反射来调用隐藏的 API。确保在使用之前,你已经获取了适当的权限,如 WRITE_EXTERNAL_STORAGE 权限。另外,这里假设你的 SD 卡已经正确挂载并且文件系统是可读写的。