android_8 button-优快云博客

本文链接：https://blog.youkuaiyun.com/hongmin118/article/details/84095288

本文介绍了一个简单的Android应用程序示例，演示了如何为两个按钮设置点击事件，并通过Toast消息展示不同的反馈信息。该示例使用了OnClickListener来处理按钮点击事件。

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package com.mhm.button.activity;

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

public class ButtonDemoActivity extends Activity {
    /** Called when the activity is first created. */
	
	private Button btn_save;
	
	private Button btn_submit;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn_save = (Button)findViewById(R.id.save);
        btn_submit = (Button)findViewById(R.id.submit);
        btn_save.setOnClickListener(listener);
        btn_submit.setOnClickListener(listener);
    }
    
    private OnClickListener listener = new OnClickListener() {
		public void onClick(View v) {
			Button b = (Button)v;
			switch (b.getId()) {
			case R.id.save:
				Toast t = Toast.makeText(getApplicationContext(), "保存成功~", Toast.LENGTH_SHORT);
				t.setGravity(Gravity.CENTER_VERTICAL, 0, -100);
				t.show();
				break;
			case R.id.submit:
				t = Toast.makeText(getApplicationContext(), "提交成功~", Toast.LENGTH_SHORT);
				t.setGravity(Gravity.CENTER_VERTICAL, 0, 100);
				t.show();
				break;
			default:
				t = Toast.makeText(getApplicationContext(), "按钮成功~", Toast.LENGTH_SHORT);
				t.setGravity(Gravity.CENTER_VERTICAL, 0, 200);
				t.show();
				break;
			}
		}
	};
}

main.xml

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

    <Button
        android:id="@+id/save"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="保存" />
     <Button
        android:id="@+id/submit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="提交" />

</LinearLayout>