Android(安卓)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 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;     }

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