Android获得手机内存和SD卡空间大小_android 获得内置储存空间大小-优快云博客

本文链接：https://blog.youkuaiyun.com/zwj540469505/article/details/15336989

本文介绍了一个简单的Android应用程序，用于显示设备的SD卡总空间及可用空间，并同时提供了手机内部存储（ROM）的相应信息。通过使用Android API中的StatFs类来获取存储空间的详细情况。

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activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="135dp"
        android:text="@string/hello_world" />

</RelativeLayout>

MainActivity.java

package com.demo.getsdspace;

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.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {

	@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;

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

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

	}
	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;

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

}