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:
- 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:
- 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):
- 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:
- 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:
- 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):
- 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):
- 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:
- 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:
- // 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);
版权声明:本文为博主原创文章,未经博主允许不得转载。