Toast是Android中用來(lái)顯示顯示信息的一種機(jī)制，和Dialog不一樣的是，Toast是沒(méi)有焦點(diǎn)的，而且Toast顯示的時(shí)間有限，過(guò)一定的時(shí)間就會(huì)自動(dòng)消失�！oast用于向用戶顯示一些幫助/提示。下面我做了5種效果，來(lái)說(shuō)明Toast的強(qiáng)大，定義一個(gè)屬于你自己的Toast。
      1.默認(rèn)效果：Toast.makeText(getApplicationContext(), "默認(rèn)Toast樣式",代碼：Toast.LENGTH_SHORT).show();

      2.自定義顯示位置效果。代碼：
  toast = Toast.makeText(getApplicationContext(),
     "自定義位置Toast", Toast.LENGTH_LONG);
   toast.setGravity(Gravity.CENTER, 0, 0);
   toast.show();
      3.帶圖片效果。代碼：
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.icon);
   toastView.addView(imageCodeProject, 0);
   toast.show();
      4.完全自定義效果:代碼：
LayoutInflater inflater = getLayoutInflater();
   View layout = inflater.inflate(R.layout.custom,
     (ViewGroup) findViewById(R.id.llToast));
   ImageView image = (ImageView) layout
     .findViewById(R.id.tvImageToast);
   image.setImageResource(R.drawable.icon);
   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 = new Toast(getApplicationContext());
   toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
   toast.setDuration(Toast.LENGTH_LONG);
   toast.setView(layout);
   toast.show();
      5.其他線程:代碼:
new Thread(new Runnable() {
    public void run() {
     showToast();
    }
   }).start();