Android 判断手机是否安装某个应用

转载：https://blog.csdn.net/u010880009/article/details/53883396

判断手机是否安装某个应用的方法有很多，但是有的也存在问题，下面写一个项目里常用的，能用的：

    /**
     * 判断手机是否安装某个应用
     * @param context
     * @param appPackageName  应用包名
     * @return   true：安装，false：未安装
     */
    public static boolean isApplicationAvilible(Context context, String appPackageName) {
        PackageManager packageManager = context.getPackageManager();// 获取packagemanager
        List<PackageInfo> pinfo = packageManager.getInstalledPackages(0);// 获取所有已安装程序的包信息
        if (pinfo != null) {
            for (int i = 0; i < pinfo.size(); i++) {
                String pn = pinfo.get(i).packageName;
                if (appPackageName.equals(pn)) {
                    return true;
                }
            }
        }
        return false;
    }

下面这个方法在使用的时候有些情况下会报错：java.lang.RuntimeException: Package manager has died

    /**
     * 判断手机是否安装某个应用
     * @param context
     * @param packageName  应用包名
     * @return   true：安装，false：未安装
     * 该方法容易报错：java.lang.RuntimeException: Package manager has died
     */
    public static boolean isAppInstallen(Context context ,String packageName){
        PackageManager pm = context.getPackageManager();
        boolean installed = false;
        try {
                pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);
            installed = true;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
            installed = false;
        }
        return  installed;
 
    }