android Toast总结

Toast提供了一个很方便的与用户交互的反馈方式。如下图：

Toast大致分一下几种：

1>普通Toast

private void normalToast() {
        Toast.makeText(context, "normalToast", Toast.LENGTH_SHORT).show();
    }

2>带图片的Toast

 1 private void picToast() {
 2         Toast toast = Toast.makeText(context, "picToast", Toast.LENGTH_SHORT);
 3         toast.setGravity(Gravity.CENTER, -50, 50);
 4         LinearLayout view = (LinearLayout) toast.getView();
 5         view.setBackgroundColor(0x2f78E100);
 6         ImageView imageView = new ImageView(context);
 7         imageView.setImageResource(R.drawable.ic_launcher);
 8         view.addView(imageView);
 9         toast.setView(view);
10         toast.show();
11     }

执行效果：

3.自定义Toast

自定义Toast需要我们自己定义一个布局文件来定义Toast的外观

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:background="#f0CA8F00"
 6     android:orientation="vertical" >
 7 
 8     <ImageView
 9         android:layout_gravity="center"
10         android:layout_width="80dip"
11         android:layout_height="40dip"
12         android:src="@drawable/haha" />
13 
14     <TextView
15         android:id="@+id/text"
16          android:layout_gravity="center"
17          android:gravity="center"
18         android:layout_width="200dip"
19         android:layout_height="50dip"
20         android:textColor="#F6F6F6" />
21 
22 </LinearLayout>

 1 private void customToast() {
 2         LayoutInflater inflater = getLayoutInflater();
 3         View layout = inflater.inflate(R.layout.toast_layout, null);
 4         layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
 5                 LayoutParams.WRAP_CONTENT));
 6         TextView textview = (TextView) layout.findViewById(R.id.text);
 7         textview.setText("Custom Toast");
 8         Toast toast = new Toast(context);
 9         // toast.setMargin(10, 30);
10         toast.setView(layout);
11         toast.show();
12     }

执行效果：

注：Toast操作也是一种UI操作，所以如果我们要在别的线程中用Toast会出现错误，我们可以用handler.post方法解决，如下：

View Code

 1 private void runInOtherThread() {
 2         new Thread(new Runnable() {
 3 
 4             @Override
 5             public void run() {
 6                 handler.post(new Runnable() {
 7 
 8                     @Override
 9                     public void run() {
10                         Toast.makeText(context, "runInOtherThread",
11                                 Toast.LENGTH_SHORT).show();
12                     }
13                 });
14 
15             }
16         }).start();
17     }