Android 检测微信或者微博是否安装

在第三方分享时,可能遇到一种场景是。在点击某个分享时需要判断是否已经安装该程序。然后中断或者给出提示

/**
     * 检测是否安装微信
     *
     * @param context
     * @return
     */
    public static boolean isWxInstall(Context context) {
        final 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 (pn.equals("com.tencent.mm")) {
                    return true;
                }
            }
        }

        return false;
    }

其他应用程序的包名(替换包名即可)

微博  com.sina.weibo
QQ   com.tencent.mobileqq

看到这里基本的需求就已经满足了,但如果中途卸载或者安装如何监听呢

/**
     * screen状态广播接收者
     */
    private class ScreenBroadcastReceiver extends BroadcastReceiver {
        private String action = null;

        @Override
        public void onReceive(Context context, Intent intent) {
            //接收安装广播
            if (intent.getAction().equals("android.intent.action.PACKAGE_ADDED")) {
                String packageName = intent.getDataString();
                ALog.e(TAG, "安装了:" + packageName + "包名的程序");



            }
            //接收卸载广播
            if (intent.getAction().equals("android.intent.action.PACKAGE_REMOVED")) {
                String packageName = intent.getDataString();
                ALog.e(TAG, "卸载了:" + packageName + "包名的程序");
             }
        }

    }


    /**
     * 启动screen状态广播接收器
     */
    private void registerListener() {
        IntentFilter filter = new IntentFilter();
        filter.addAction("android.intent.action.PACKAGE_ADDED");
        filter.addAction("android.intent.action.PACKAGE_REMOVED");
        filter.addDataScheme("package");
        mContext.registerReceiver(mScreenReceiver, filter);
    }

end……….