获取手机内存信息和SD卡信息差不多,只不过是用的File路径不同,见代码:
/**
* 这个是手机内存的可用空间大小
*/
static public long getAvailableInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
return availableBlocks * blockSize/1024/1024;//M
} /**
*
*这个是手机内存的总空间大小
*/
static public long getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize/1024/1024;//M
}
/**
* 这个是手机内存的可用空间大小
*/
static public long getAvailableInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
return availableBlocks * blockSize/1024/1024;//M
} /**
*
*这个是手机内存的总空间大小
*/
static public long getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize/1024/1024;//M
}
就是这句
插上手机看不到 data 下的东西 没有办法看我是不是写就去东西了啊··
郁闷·
这个 在模拟器上是可以啊···但是真机你就打不开data的目录啊·
package com.bcf;import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;public class AutoDownloadSetupAPK extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String urls="http://android.d.cn/rm/2/978/6228/?http://c.downandroid.com/android/new/game1/29/110029/ucweb_1.apk";
setContentView(R.layout.main);
String tempFileType=urls.substring(urls.lastIndexOf("."),urls.length());
String tempFileName=urls.substring(urls.lastIndexOf("/")+1,urls.lastIndexOf("."));
String tempUrl=urls.substring(0, urls.lastIndexOf("/")+1);
File file=downLoadFile(tempUrl,tempFileName,tempFileType);
openFile(file);
} protected File downLoadFile(String httpUrl,String fileNames,String fileType) {
// TODO Auto-generated method stub
//final String fileName = "spring.mp3";
final String fileName = chineseToHexString(fileNames)+fileType;
File tmpFile = new File("/sdcard/");
if (!tmpFile.exists()) {
tmpFile.mkdir();
}
final File file = new File("/sdcard/" + fileName); try {
URL url = new URL(httpUrl+fileName);
try {
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
InputStream is = conn.getInputStream();
FileOutputStream fos = new FileOutputStream(file);
byte[] buf = new byte[256];
conn.connect();
double count = 0;
if (conn.getResponseCode() >= 400) {
Toast.makeText(AutoDownloadSetupAPK.this, "连接超时", Toast.LENGTH_SHORT)
.show();
} else {
while (count <= 100) {
if (is != null) {
int numRead = is.read(buf);
if (numRead <= 0) {
break;
} else {
fos.write(buf, 0, numRead);
} } else {
break;
} }
} conn.disconnect();
fos.close();
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block e.printStackTrace();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block e.printStackTrace();
}
return file;
}
//打开APK程序代码 private void openFile(File file) {
// TODO Auto-generated method stub
Log.e("OpenFile", file.getName());
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(android.content.Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");
startActivity(intent);
}
public String chineseToHexString(String str){
Toast.makeText(getApplicationContext(), str, Toast.LENGTH_LONG).show();
if(str==null || str.length()<=0){
return "";
}
byte[] a=str.getBytes();
StringBuffer sb = new StringBuffer();
for(int i=0; i<a.length; i++){
sb.append(Integer.toHexString((256+a[i])%256) + " ");
}
String tempSb=sb.toString();
tempSb=tempSb.replace(" ", "%");
tempSb="%"+tempSb.substring(0, tempSb.lastIndexOf("%"));
return tempSb;
}} <!-- 访问internet权限 -->
<uses-permission android:name="android.permission.INTERNET"/>
<!-- 在SDCard中创建与删除文件权限 -->
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
<!-- 往SDCard写入数据权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
try {
process = Runtime.getRuntime().exec("reboot");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}