FacebookDialogBase.java 文件源码

protected void showImpl(final CONTENT content, final Object mode) {
    AppCall appCall = createAppCallForMode(content, mode);
    if (appCall != null) {
        if (fragment != null) {
            DialogPresenter.present(appCall, fragment);
        } else {
            DialogPresenter.present(appCall, activity);
        }
    } else {
        // If we got a null appCall, then the derived dialog code is doing something wrong
        String errorMessage = "No code path should ever result in a null appCall";
        Log.e(TAG, errorMessage);
        if (FacebookSdk.isDebugEnabled()) {
            throw new IllegalStateException(errorMessage);
        }
    }
}