Android 获取SD卡和手机存储空间

import java.io.File;

import android.app.Activity;

import android.os.Bundle;

import android.os.Environment;

import android.os.StatFs;

import android.text.format.Formatter;

import android.util.Log;

public class Memory extends Activity {

public static final String TAG = "Memory";

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

updateMemoryStatus();

}

private void updateMemoryStatus() {

String status = Environment.getExternalStorageState();

String readOnly = "";

// 是否只读

if (status.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {

status = Environment.MEDIA_MOUNTED;

readOnly = getString(R.string.read_only);

}

if (status.equals(Environment.MEDIA_MOUNTED)) {

try {

File path = Environment.getExternalStorageDirectory();

StatFs stat = new StatFs(path.getPath());

long blockSize = stat.getBlockSize();

long totalBlocks = stat.getBlockCount();

long availableBlocks = stat.getAvailableBlocks();

// SD卡总容量

String sdSize = formatSize(totalBlocks * blockSize);

Log.i(TAG, "SD卡总容量: " + sdSize);

// SD卡剩余容量

String sdAvail = formatSize(availableBlocks * blockSize)

+ readOnly;

Log.i(TAG, "SD卡剩余容量: " + sdAvail);

} catch (IllegalArgumentException e) {

status = Environment.MEDIA_REMOVED;

}

}

File path = Environment.getDataDirectory();

StatFs stat = new StatFs(path.getPath());

long blockSize = stat.getBlockSize();

long availableBlocks = stat.getAvailableBlocks();

// 手机内存剩余容量

String memoryAvail = formatSize(availableBlocks * blockSize);

Log.i(TAG, "手机内存剩余容量: " + memoryAvail);

long totalBlocks = stat.getBlockCount();

// 手机内存总容量

String memorySize = formatSize(totalBlocks * blockSize);

Log.i(TAG, "手机内存总容量: " + memorySize);

}

// 格式化 转化为.MB格式

private String formatSize(long size) {

return Formatter.formatFileSize(this, size);

}

}