Android获取手机相关信息

首先，一个小例子：

package com.brio.testid;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.os.Bundle;
import android.provider.Settings.Secure;
import android.widget.TextView;

public class MainActivity extends Activity {
TextView tvId = null;
String androidId = null;
BluetoothAdapter m_BluetoothAdapter = null; // Local Bluetooth adapter

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
androidId = Secure.getString(getContentResolver(), Secure.ANDROID_ID);
tvId = (TextView) findViewById(R.id.tvId);

m_BluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
String m_szBTMAC = m_BluetoothAdapter.getAddress();

tvId.setText("手机型号: " + android.os.Build.MODEL + ",\nSDK版本:"
+ android.os.Build.VERSION.SDK + ",\n系统版本:"
+ android.os.Build.VERSION.RELEASE + ",\nBT MAC:" + m_szBTMAC
+ ",\nAndroidId:" + androidId);
tvId.setTextSize(30.0f);
}
}

下面内容转载自：http://blog.csdn.net/way_ping_li/article/details/8314009 学习备用。

一、Android 获取手机中已安装apk文件信息(PackageInfo、ResolveInfo)(应用图片、应用名、包名等)

1、通过PackageManager可获取手机端已安装的apk文件的信息，具体代码如下：

[java] view
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PackageManager packageManager = this.getPackageManager();

List<PackageInfo> packageInfoList = packageManager.getInstalledPackages(0);

通过上述方法，可得到手机中安装的所有应用程序，包括手动安装的apk包的信息、、系统预装的应用软件的信息，要区分这两类软件可使用以下方法:

(a) 从packageInfoList获取的packageInfo，再通过packageInfo.applicationInfo获取applicationInfo。

(b) 判断(applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM)的值，该值大于0时，表示获取的应用为系统预装的应用，反之则为手动安装的应用。

(1)获取应用的代码:

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public static List<PackageInfo> getAllApps(Context context) {

List<PackageInfo> apps = new ArrayList<PackageInfo>();

PackageManager pManager = context.getPackageManager();

// 获取手机内所有应用

List<PackageInfo> paklist = pManager.getInstalledPackages(0);

for (int i = 0; i < paklist.size(); i++) {

PackageInfo pak = (PackageInfo) paklist.get(i);

// 判断是否为非系统预装的应用程序

if ((pak.applicationInfo.flags & pak.applicationInfo.FLAG_SYSTEM) <= 0) {

apps.add(pak);

}

}

return apps;

}

(2)、获取图片、应用名、包名(ShareItemInfo 类是自己写的，忽视吧):

[java] view
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PackageManager pManager = MessageSendActivity.this.getPackageManager();

List<PackageInfo> appList = Utils.getAllApps(MessageSendActivity.this);

for(int i=0;i<appList.size();i++) {

PackageInfo pinfo = appList.get(i);

shareItem = new ShareItemInfo();

shareItem.setIcon(pManager.getApplicationIcon(pinfo.applicationInfo));

shareItem.setLabel(pManager.getApplicationLabel(pinfo.applicationInfo).toString());

shareItem.setPackageName(pinfo.applicationInfo.packageName);

}

(3)获取支持分享的应用的代码：

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public static List<ResolveInfo> getShareApps(Context context){

List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();

Intent intent=new Intent(Intent.ACTION_SEND,null);

intent.addCategory(Intent.CATEGORY_DEFAULT);

intent.setType("text/plain");

PackageManager pManager = context.getPackageManager();

mApps = pManager.queryIntentActivities(intent,PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);

return mApps;

}

由于该方法，返回的并不是PackageInfo 对象。而是ResolveInfo。因此获取图片、应用名、包名的方法不一样，如下：

[java] view
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PackageManager pManager = MessageSendActivity.this.getPackageManager();

List<ResolveInfo> resolveList = Utils.getShareApps(MessageSendActivity.this);

for(int i=0;i<resolveList.size();i++) {

ResolveInfo resolve = resolveList.get(i);

ShareItemInfo shareItem = new ShareItemInfo();

//set Icon

shareItem.setIcon(resolve.loadIcon(pManager));

//set Application Name

shareItem.setLabel(resolve.loadLabel(pManager).toString());

//set Package Name

shareItem.setPackageName(resolve.activityInfo.packageName);

}

总结：

通过 PackageInfo 获取具体信息方法：

包名获取方法：packageInfo.packageName

icon获取获取方法：packageManager.getApplicationIcon(applicationInfo)

应用名称获取方法：packageManager.getApplicationLabel(applicationInfo)

使用权限获取方法：packageManager.getPackageInfo(packageName,PackageManager.GET_PERMISSIONS)

.requestedPermissions

通过 ResolveInfo 获取具体信息方法：

包名获取方法：resolve.activityInfo.packageName

icon获取获取方法：resolve.loadIcon(packageManager)

应用名称获取方法：resolve.loadLabel(packageManager).toString()

二、获取手机可用内存和总内存(手机的内存信息主要在/proc/meminfo文件中，其中第一行是总内存，而剩余内存可通过ActivityManager.MemoryInfo得到)：

[java] view
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private String[] getTotalMemory() {

String[] result = {"",""}; //1-total 2-avail

ActivityManager.MemoryInfo mi = new ActivityManager.MemoryInfo();

mActivityManager.getMemoryInfo(mi);

long mTotalMem = 0;

long mAvailMem = mi.availMem;

String str1 = "/proc/meminfo";

String str2;

String[] arrayOfString;

try {

FileReader localFileReader = new FileReader(str1);

BufferedReader localBufferedReader = new BufferedReader(localFileReader, 8192);

str2 = localBufferedReader.readLine();

arrayOfString = str2.split("\\s+");

mTotalMem = Integer.valueOf(arrayOfString[1]).intValue() * 1024;

localBufferedReader.close();

} catch (IOException e) {

e.printStackTrace();

}

result[0] = Formatter.formatFileSize(this, mTotalMem);

result[1] = Formatter.formatFileSize(this, mAvailMem);

Log.i(TAG, "meminfo total:" + result[0] + " used:" + result[1]);

return result;

}

三、获取手机CPU信息(和内存信息同理，cpu信息可通过读取/proc/cpuinfo文件来得到，其中第一行为cpu型号，第二行为cpu频率):

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private String[] getCpuInfo() {

String str1 = "/proc/cpuinfo";

String str2 = "";

String[] cpuInfo = {"", ""}; //1-cpu型号 //2-cpu频率

String[] arrayOfString;

try {

FileReader fr = new FileReader(str1);

BufferedReader localBufferedReader = new BufferedReader(fr, 8192);

str2 = localBufferedReader.readLine();

arrayOfString = str2.split("\\s+");

for (int i = 2; i < arrayOfString.length; i++) {

cpuInfo[0] = cpuInfo[0] + arrayOfString[i] + " ";

}

str2 = localBufferedReader.readLine();

arrayOfString = str2.split("\\s+");

cpuInfo[1] += arrayOfString[2];

localBufferedReader.close();

} catch (IOException e) {

}

Log.i(TAG, "cpuinfo:" + cpuInfo[0] + " " + cpuInfo[1]);

return cpuInfo;

}

四、获取手机MAC地址：

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private String getMacAddress(){

String result = "";

WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);

WifiInfo wifiInfo = wifiManager.getConnectionInfo();

result = wifiInfo.getMacAddress();

Log.i(TAG, "macAdd:" + result);

return result;

}

五、获取屏幕密度三种方法：

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// 获取屏幕密度（方法1）

int screenWidth = getWindowManager().getDefaultDisplay().getWidth(); // 屏幕宽（像素，如：480px）

int screenHeight = getWindowManager().getDefaultDisplay().getHeight(); // 屏幕高（像素，如：800p）

Log.e(TAG + " getDefaultDisplay", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);

// 获取屏幕密度（方法2）

DisplayMetrics dm = new DisplayMetrics();

dm = getResources().getDisplayMetrics();

float density = dm.density; // 屏幕密度（像素比例：0.75/1.0/1.5/2.0）

int densityDPI = dm.densityDpi; // 屏幕密度（每寸像素：120/160/240/320）

float xdpi = dm.xdpi;

float ydpi = dm.ydpi;

Log.e(TAG + " DisplayMetrics", "xdpi=" + xdpi + "; ydpi=" + ydpi);

Log.e(TAG + " DisplayMetrics", "density=" + density + "; densityDPI=" + densityDPI);

screenWidth = dm.widthPixels; // 屏幕宽（像素，如：480px）

screenHeight = dm.heightPixels; // 屏幕高（像素，如：800px）

Log.e(TAG + " DisplayMetrics(111)", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);

// 获取屏幕密度（方法3）

dm = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(dm);

density = dm.density; // 屏幕密度（像素比例：0.75/1.0/1.5/2.0）

densityDPI = dm.densityDpi; // 屏幕密度（每寸像素：120/160/240/320）

xdpi = dm.xdpi;

ydpi = dm.ydpi;

Log.e(TAG + " DisplayMetrics", "xdpi=" + xdpi + "; ydpi=" + ydpi);

Log.e(TAG + " DisplayMetrics", "density=" + density + "; densityDPI=" + densityDPI);

int screenWidthDip = dm.widthPixels; // 屏幕宽（dip，如：320dip）

int screenHeightDip = dm.heightPixels; // 屏幕宽（dip，如：533dip）

Log.e(TAG + " DisplayMetrics(222)", "screenWidthDip=" + screenWidthDip + "; screenHeightDip=" + screenHeightDip);

screenWidth = (int)(dm.widthPixels * density + 0.5f); // 屏幕宽（px，如：480px）

screenHeight = (int)(dm.heightPixels * density + 0.5f); // 屏幕高（px，如：800px）

Log.e(TAG + " DisplayMetrics(222)", "screenWidth=" + screenWidth + "; screenHeight=" + screenHeight);