為 Toast 訊息建立自己的單例類

以下是如何為 Toast 訊息建立自己的單例類。如果你的應用程式需要顯示不同用例的成功，警告和危險訊息，則可以在將其修改為你自己的規範後使用此類。

    public class ToastGenerate {
        private static ToastGenerate ourInstance;

        public ToastGenerate (Context context) {
            this.context = context;
                                                }
        public static ToastGenerate getInstance(Context context) {
            if (ourInstance == null)
                ourInstance = new ToastGenerate(context);
            return ourInstance;
        }
    
       //pass message and message type to this method
        public void createToastMessage(String message,int type){
       
//inflate the custom layout 
            LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    
            LinearLayout toastLayout = (LinearLayout) layoutInflater.inflate(R.layout.layout_custome_toast,null);
            TextView toastShowMessage = (TextView) toastLayout.findViewById(R.id.textCustomToastTopic);
    
            switch (type){
                case 0:
                    //if the message type is 0 fail toaster method will call
                    createFailToast(toastLayout,toastShowMessage,message);
                    break;
                case 1:
                    //if the message type is 1 success toaster method will call
                    createSuccessToast(toastLayout,toastShowMessage,message);
                    break;
    
                case 2:
                    createWarningToast( toastLayout, toastShowMessage, message);
                    //if the message type is 2 warning toaster method will call
                    break;
                default:
                    createFailToast(toastLayout,toastShowMessage,message);
    
            }
        }
    
    //Failure toast message method
        private final void createFailToast(LinearLayout toastLayout,TextView toastMessage,String message){
            toastLayout.setBackgroundColor(context.getResources().getColor(R.color.button_alert_normal));
            toastMessage.setText(message);
            toastMessage.setTextColor(context.getResources().getColor(R.color.white));
            showToast(context,toastLayout);
        }
    
        //warning toast message method
        private final void createWarningToast( LinearLayout toastLayout, TextView toastMessage, String message) {
            toastLayout.setBackgroundColor(context.getResources().getColor(R.color.warning_toast));
            toastMessage.setText(message);
            toastMessage.setTextColor(context.getResources().getColor(R.color.white));
            showToast(context, toastLayout);
        }
    //success toast message method
        private final void createSuccessToast(LinearLayout toastLayout,TextView toastMessage,String message){
            toastLayout.setBackgroundColor(context.getResources().getColor(R.color.success_toast));
    
            toastMessage.setText(message);
            toastMessage.setTextColor(context.getResources().getColor(R.color.white));
            showToast(context,toastLayout);
        }
    
        private void showToast(View view){
            Toast toast = new Toast(context);
            toast.setGravity(Gravity.TOP,0,0); // show message in the top of the device
            toast.setDuration(Toast.LENGTH_SHORT);
            toast.setView(view);
            toast.show();
        }
    }