android源码 大小,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;

}

}