Android中的Toast用於向用戶顯示一些幫助/提示。

以下是關於Toast的一些使用的總結，希望對大家的學習和解決問題提供一些幫助：

預設Toast樣式：

Toast.makeText(getApplicationContext(), "預設Toast樣式",Toast.LENGTH_SHORT).show();

Toast toast = Toast.makeText(getApplicationContext(), "自定義位置Toast",Toast.LENGTH_LONG);  
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
 

自定義大小Toast(自定義大小並不由程式碼控制，而是由佈局控制，注意使用佈局的padding屬性)

View params=LayoutInflater.from(getApplicationContext()).inflate(R.layout.params_layout, null);
TextView paramsTextView=(TextView) params.findViewById(R.id.paramsTitleToast);
paramsTextView.setText("自定義大小的Toast");
toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.CENTER, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(params);
 

Toast toast  = Toast.makeText(getApplicationContext(), "帶圖片的Toast",Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
LinearLayout toastView = (LinearLayout) toast.getView();
ImageView imageCodeProject = new ImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.ic_launcher);
toastView.addView(imageCodeProject, 0);
toast.show();
 

View layout = getLayoutInflater().inflate(R.layout.custom, null);
ImageView image = (ImageView) layout.findViewById(R.id.tvImageToast);
image.setImageResource(R.drawable.ic_launcher);
TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);
title.setText("Attention");
TextView text = (TextView) layout.findViewById(R.id.tvTextToast);
text.setText("完全自定義Toast");
Toast toast = new Toast(getApplicationContext()); 
toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();

public class CustomToast { 
    private static Toast mToast;
    private static Handler mHandler = new Handler();
    private static Runnable r = new Runnable() {
        public void run() {
            mToast.cancel();
        }
    };

    public static void showToast(Context mContext, String text, int duration)      
        mHandler.removeCallbacks(r);
        if (mToast != null)
            mToast.setText(text);
        else
            mToast = Toast.makeText(mContext, text, Toast.LENGTH_SHORT);
        mHandler.postDelayed(r, duration);
        mToast.show();
    }

    public static void showToast(Context mContext, int resId, int duration) {
        showToast(mContext, mContext.getResources().getString(resId), duration);
    }
}

/**
 * Toast統一管理類
 * 
 */
public class ToastUtil {

	private ToastUtil() {
		/* cannot be instantiated */
		throw new UnsupportedOperationException("cannot be instantiated");
	}

	public static boolean isShow = true;

	/**
	 * 短時間顯示Toast
	 * 
	 * @param context
	 * @param message
	 */
	public static void showShort(Context context, CharSequence message) {
		if (isShow)
			Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
	}

	/**
	 * 短時間顯示Toast
	 * 
	 * @param context
	 * @param message
	 */
	public static void showShort(Context context, int message) {
		if (isShow)
			Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
	}

	/**
	 * 長時間顯示Toast
	 * 
	 * @param context
	 * @param message
	 */
	public static void showLong(Context context, CharSequence message) {
		if (isShow)
			Toast.makeText(context, message, Toast.LENGTH_LONG).show();
	}

	/**
	 * 長時間顯示Toast
	 * 
	 * @param context
	 * @param message
	 */
	public static void showLong(Context context, int message) {
		if (isShow)
			Toast.makeText(context, message, Toast.LENGTH_LONG).show();
	}

	/**
	 * 自定義顯示Toast時間
	 * 
	 * @param context
	 * @param message
	 * @param duration
	 */
	public static void show(Context context, CharSequence message, int duration) {
		if (isShow)
			Toast.makeText(context, message, duration).show();
	}

	/**
	 * 自定義顯示Toast時間
	 * 
	 * @param context
	 * @param message
	 * @param duration
	 */
	public static void show(Context context, int message, int duration) {
		if (isShow)
			Toast.makeText(context, message, duration).show();
	}

}