android Button01(按钮）_安卓按钮1是按钮2的两倍-优快云博客

本文链接：https://blog.youkuaiyun.com/suzicyt/article/details/6270284

本文介绍了一个简单的Android应用程序示例，展示了如何创建两个按钮并设置不同的背景颜色，以及为按钮添加点击事件监听器来实现相应的功能，如显示提示消息和退出应用。

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Button01.java:

package com.Button01;

import android.app.Activity;
import android.graphics.Color;
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 Button01 extends Activity {
private Button mButton01;
private Button mButton02;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        mButton01=(Button)findViewById(R.id.mButton01);
        mButton02=(Button)findViewById(R.id.mButton02);

        mButton01.setText("OK");
        mButton02.setText("Quit");

        mButton01.setBackgroundColor(Color.GREEN);
        mButton02.setBackgroundColor(Color.RED);

        mButton01.setOnClickListener(new Button.OnClickListener(){
        public void onClick(View v)
        {
          Toast toast=Toast.makeText(Button01.this, "you touch"+mButton01.getText(), Toast.LENGTH_LONG);
          toast.setGravity(Gravity.TOP, 0, 150);
          toast.show();
        }
        });

        mButton02.setOnClickListener(new Button.OnClickListener(){
        public void onClick(View v)
        {
          Button01.this.finish();
        }
        });
    }
}

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
<Button
android:id="@+id/mButton01"
android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    </Button>
<Button
android:id="@+id/mButton02"
android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    </Button>
</LinearLayout>