Android Toast详解

Toast的基本原理其实就是将一个View添加到WindowManager中，让WindowManager来把View显示出来。
Toast是Android用来显示信息的一种机制，和Dialog不一样的是，Toast是没有焦点的，而且Toast显示的时间有限，过一定的时间就会自动消失，而且Toast主要用于向用户显示提示消息。


Toast.makeText(getApplicationContext(), "默认Toast样式",Toast.LENGTH_SHORT).show();


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


toast = Toast.makeText(getApplicationContext(),"带图片的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();


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("完全自定义Toast");
toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();




参考文档
http://daikainan.iteye.com/blog/1405575
http://blog.youkuaiyun.com/renguichao/article/details/7846246




时间
起草于 2015-10-14