获取手机存储空间信息

需求：获取手机存储空间信息，包括总空间和可用空间

代码：

package com.suzi.getmemoryinfo;import android.os.Bundle;import android.os.Environment;import android.os.StatFs;import android.support.v7.app.AppCompatActivity;import android.text.format.Formatter;import android.widget.TextView;import java.io.File;public class MainActivity extends AppCompatActivity{    //控件    private TextView tv = null;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv = (TextView) findViewById(R.id.tv);        //获得手机内存空间信息        File dataFileDir = Environment.getDataDirectory();        String dataMemoryInfo = getMemoryInfo(dataFileDir);        //获得SD卡存储空间信息        File sdFileDir = Environment.getExternalStorageDirectory();        String sdMemoryInfo = getMemoryInfo(sdFileDir);        tv.setText("手机内存：\n" + dataMemoryInfo + "\nSD卡：\n" + sdMemoryInfo);    }    private String getMemoryInfo(File path)    {        // 获得一个磁盘状态对象        StatFs stat = new StatFs(path.getPath());        long blockSize = stat.getBlockSize();    // 获得一个扇区的大小        long totalBlocks = stat.getBlockCount();    // 获得扇区的总数        long availableBlocks = stat.getAvailableBlocks();    // 获得可用的扇区数量        //总存储空间        String totalMemory = Formatter.formatFileSize(this, blockSize * totalBlocks);        //可用空间        String availableMemory = Formatter.formatFileSize(this, blockSize * availableBlocks);        return "总空间：" + totalMemory + "\n可用空间：" + availableMemory;    }}

运行效果：