编程回忆之Android回忆（Android应用参数的获取）

我不是女神ヾ 2022-08-26 00:41 241阅读 0赞

# Android应用参数的获取 #

package com.prtsdkapp;
    
    import java.lang.ref.WeakReference;
    import java.util.List;
    
    import android.app.ActivityManager;
    import android.app.ActivityManager.RunningAppProcessInfo;
    import android.app.ActivityManager.RunningTaskInfo;
    import android.content.Context;
    import android.content.pm.PackageInfo;
    import android.content.pm.PackageManager;
    import android.content.pm.PackageManager.NameNotFoundException;
    import android.util.Log;
    
    public class getContextParm {
    	private static final String TAG = "ContextMgr";
    
    	/**
    	 * 两个进程要共用sharedPreferences文件，则context要一样
    	 * @param context
    	 * @return
    	 */
    	public static Context getContext(Context context, String appPackageName) {
    		// String packageName = "com.anyfish.app";
    		WeakReference<Context> mContext = new WeakReference<Context>(context);
    		Context con = mContext.get();
    		try {
    			Context contextApp = mContext.get().createPackageContext(
    					appPackageName, 0);
    			con = contextApp;
    
    		} catch (NameNotFoundException e) {
    			e.printStackTrace();
    		}
    		return con;
    	}
    
    	/**
    	 * 获取当前进程名称
    	 * @param context
    	 * @return
    	 */
    	public static String getCurProcessName(Context context) {
    		Log.d(TAG, "getCurProcessName");
    		int pid = android.os.Process.myPid();
    		ActivityManager mActivityManager = (ActivityManager) context
    				.getSystemService(Context.ACTIVITY_SERVICE);
    		for (ActivityManager.RunningAppProcessInfo appProcess : mActivityManager
    				.getRunningAppProcesses()) {
    			if (appProcess.pid == pid) {
    				Log.d(TAG, "getCurProcessName:" + appProcess.processName);
    				return appProcess.processName;
    			}
    		}
    		return null;
    	}
    
    	/**
    	 * 获取sdk版本号
    	 * @return
    	 */
    	public static int getSDKVersionNumber() {
    		int sdkVersion;
    		try {
    			sdkVersion = Integer.valueOf(android.os.Build.VERSION.SDK);
    		} catch (NumberFormatException e) {
    			sdkVersion = 0;
    		}
    		return sdkVersion;
    	}
    
    	/**
    	 * 检测当前packageName程序是否属于前台程序
    	 * 
    	 * @param app
    	 * @param appPackageName
    	 * @return
    	 */
    	public static boolean isTopActivity(Context context, String appPackageName) {
    		ActivityManager activityManager = (ActivityManager) context
    				.getSystemService(Context.ACTIVITY_SERVICE);
    		List<RunningTaskInfo> tasksInfo = activityManager.getRunningTasks(1);
    
    		if (tasksInfo.size() > 0) {
    			if (tasksInfo.get(0).topActivity.getPackageName().contains(
    					appPackageName)) {
    				return true;
    			}
    		}
    		return false;
    	}
    
    	/**
    	 * 判断当前packageName程序是否切换到后台了
    	 * @param app
    	 * @param appPackageName
    	 * @return
    	 */
    	public static boolean isBackgroundActivity(Context context,
    			String appPackageName) {
    		if (isTopActivity(context, appPackageName)) {
    			return false;
    		}
    		ActivityManager am = (ActivityManager) context
    				.getSystemService(Context.ACTIVITY_SERVICE);
    		List<RunningAppProcessInfo> run = am.getRunningAppProcesses();
    		for (RunningAppProcessInfo ra : run) {
    			if (ra.processName.contains(appPackageName)
    					&& !ra.processName.contains(appPackageName + ":")) {
    				return true;
    			}
    		}
    		return false;
    	}
    
    	/**
    	 * 判断程序是否安装
    	 * @param context
    	 * @return
    	 */
    	public static boolean isAppInstalled(Context context, String packageName) {
    		Log.d(TAG, "isAppInstalled");
    
    		PackageManager mPackageManager = context.getPackageManager();
    
    		if (mPackageManager == null) {
    			return false;
    		}
    
    		List<PackageInfo> pkgs = mPackageManager
    				.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
    
    		boolean installed = false;
    		for (PackageInfo info : pkgs) {
    			if (info.packageName.equals(packageName)) {
    				installed = true;
    				break;
    			}
    		}
    
    		return installed;
    	}
    
    }