Android开发中获取SDcard、手机内存空间大小的源代码

这里列出的是MainActivity.java的代码部分

package com.example.test7;

import java.io.File;

import android.os.Bundle;

import android.os.Environment;

import android.os.StatFs;

import android.app.Activity;

import android.text.format.Formatter;

import android.widget.TextView;

public class MainActivity extends Activity {

    @SuppressWarnings("deprecation")

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        TextView tv = (TextView) findViewById(R.id.tv);

        

        File path = Environment.getExternalStorageDirectory();

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

        long blockSize = stat.getBlockSize();

        long totalBlocks = stat.getBlockCount();

        long availableBlocks = stat.getAvailableBlocks();

        

        long totalSize = blockSize * totalBlocks;

        long availSize = availableBlocks * blockSize;

        

        //总大小

        String totalStr = Formatter.formatFileSize(this, totalSize);

        //可用大小

        String availStr = Formatter.formatFileSize(this, availSize);

    

        tv.setText("SDcard内存：总空间" + totalStr + "\n" + "SDcard内存：可用空间" + availStr + "\n" + getRomSpaceInfo());

    }

    @SuppressWarnings("deprecation")

    public String getRomSpaceInfo(){

        File path = Environment.getDataDirectory();

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

        long blockSize = stat.getBlockSize();

        long totalBlocks = stat.getBlockCount();

        long availableBlocks = stat.getAvailableBlocks();

        

        long totalSize = blockSize * totalBlocks;

        long availSize = availableBlocks * blockSize;

        

        //总大小

        String totalStr = Formatter.formatFileSize(this, totalSize);

        //可用大小

        String availStr = Formatter.formatFileSize(this, availSize);

        return "手机内存：总空间" + totalStr +"\n手机内存：可用空间" + availStr;

    }

}
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