安卓app_sl3.10游戏界面设计按钮点击事件-toast notification-弹出消息自动关闭

安卓app_sl3.10游戏界面设计按钮点击事件-toast notification-点击进入弹出消息自动关闭

package com.example.sl3_10;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ImageView img0=(ImageView)findViewById(R.id.imageButton0);
        img0.setOnClickListener(new OnClickListener()
                {
                   @Override
                   public void onClick(View v){
                       Toast.makeText(MainActivity.this, "进入游戏", Toast.LENGTH_SHORT).show();
                   }
            
                });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.sl3_10.MainActivity" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:scaleType="centerCrop"
        android:layout_weight="1"
        android:src="@drawable/top" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/bottom"
        android:id="@+id/relativeLayout1"
        android:layout_weight="2" >

        <ImageView
            android:id="@+id/imageButton0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:src="@drawable/in" />

        <ImageView
            android:id="@+id/imageButton1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_above="@+id/imageButton0"
            android:layout_alignRight="@+id/imageButton0"
            android:src="@drawable/setting" />

        <ImageView
            android:id="@+id/imageButton2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/imageButton0"
            android:layout_alignLeft="@+id/imageButton0"
            android:src="@drawable/exit" />

        <ImageView
            android:id="@+id/imageButton3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
           android:layout_alignTop="@+id/imageButton0"
            android:layout_toLeftOf="@+id/imageButton0"
            android:src="@drawable/help" />

        <ImageView
            android:id="@+id/imageButton4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"          
            android:layout_toRightOf="@+id/imageButton0"
            android:layout_alignTop="@+id/imageButton0"
            android:src="@drawable/board" />

    </RelativeLayout>

</LinearLayout>