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Android開啟Facebook App

如果手機裡已經安裝了Facebook，為什麼還要開啟瀏覽器重新輸入帳密呢？
直接用Facebook操作不是比較方便呢？
--以上是前言--XD

所以為了方便已經安裝Facebook使用者，所以App裡開啟粉絲專頁時，應該會有兩種方式
範例如下：


...
    public static void openFacebookPage(Context context, String id) {
        Intent intent = null;
        try {
            context.getPackageManager().getPackageInfo("com.facebook.katana", 0);
            String uri = "fb://page/" + id;
            intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
        } catch (Exception e) {
            String uri = "https://www.facebook.com/pages/1/" + id;
            intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
        }
        context.startActivity(intent);
    }
...

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