自己定义Toast

<?xml version="1.0" encoding="utf-8"?
>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#448899"
        android:text="你好" />


    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher" />


</LinearLayout>

package com.example.checkboxtext;


import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.Toast;






public class MainActivity extends Activity {






	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}




	public void toastshow(View view){
		//		Toast toast = Toast.makeText(MainActivity.this, "toastshow", 0);
		//		toast.setText("你好");
		//		toast.setGravity(Gravity.TOP|Gravity.LEFT, 30, 200);//显示在距离顶部200，距离left30的位置
		//		toast.show();


		Toast toast = new Toast(MainActivity.this);
		View view2 = View.inflate(MainActivity.this, R.layout.toast, null);//把一个布局转化成一个view对象
		toast.setView(view2);
		toast.setDuration(0);//定义时间长短0（短）或1（长）
		toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
		toast.show();


	}
}