android中的提示信息顯示方法(toast應用)

android中的提示信息顯示方法(toast應用)

  (2011-10-17 11:02:06)
標籤: 

android

 

toast

 

雜談

分類: Android

android中toast的應用:html

本程序實現了用戶點擊按鈕,桌面顯示用戶在程序中設定好的提示信息android

package com.dou.button.activity;app

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
ide

public class MainActivity extends Activity
{
 
 private  Button btn1 = null;
 private  Button btn2 = null;
 @Override
 public void onCreate(Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  //肯定按鈕的操做代碼

  btn1 = (Button)findViewById(R.id.btn1);
  btn1.setOnClickListener(new OnClickListener()
  {
   
   public void onClick(View v)
   {
    Toast.makeText(MainActivity.this, "你點擊了肯定按鈕",Toast.LENGTH_LONG ).show();
    
   }
  });
  //推出按鈕的操做代碼
  btn2 = (Button)findViewById(R.id.btn2);
  btn2.setOnClickListener(new OnClickListener()
  {
   
   public void onClick(View v)
   {
    Toast.makeText(MainActivity.this, "你點擊了退出按鈕", Toast.LENGTH_LONG).show();
    
   }
  });
 
}
}
this

 

注:當有多個按鈕時以上代碼會顯得冗餘,能夠進行修改,修改完成後的代碼爲如下spa

 

package com.dou.button.activity;htm

import android.app.Activity;blog

import android.os.Bundle;ci

import android.view.View;get

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

 

public class MainActivity extends Activity

{

private  Button btn1 = null;

private  Button btn2 = null;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//肯定按鈕的操做代碼

btn1 = (Button)findViewById(R.id.btn1);

btn2 = (Button)findViewById(R.id.btn2);

btn1.setOnClickListener(listener);

btn2.setOnClickListener(listener);

}

private OnClickListener listener = new OnClickListener()

{

public void onClick(View v)

{

Button  btn = (Button)v;

switch(btn.getId())

{

case R.id.btn1:

Toast.makeText(MainActivity.this, "你點擊了肯定按鈕", Toast.LENGTH_LONG).show();

break;

case R.id.btn2:

Toast.makeText(MainActivity.this, "你點擊了退出按鈕", Toast.LENGTH_LONG).show();

break;

}

}

};

}

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