Android获取手机内存状态_安卓查看扇区数-优快云博客

本文介绍了如何在Android应用中获取并展示SD卡和手机内存空间的状态，包括总空间和可用空间的计算。

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package com.uc.storage;

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.widget.TextView;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		TextView show = (TextView) findViewById(R.id.show);
		//获取SD卡的内存状态
		File sdCardDir = Environment.getExternalStorageDirectory();
		String sdCardMemory = getMemoryInfo(sdCardDir);
		
		//获取手机内存空间的状态
		File dataDir = Environment.getDataDirectory();
		String dataMemory = getMemoryInfo(dataDir);
		
		show.setText("SD卡的内存状态："+"\n"+sdCardMemory+"\n"+"手机内存空间状态："+"\n"+dataMemory);
	}
	
	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();//获得总扇区的个数
        long availableBlocks = stat.getAvailableBlocks();//获得可用扇区数
        
        //总空间
        String totalMemory = Formatter.formatFileSize(this, totalBlocks*blockSize);
        //可用空间
        String availableMemory = Formatter.formatFileSize(this, availableBlocks*blockSize);
        
        return "总空间："+totalMemory+"\n"+"可用空间："+availableMemory;
	}

}