自定义Button

edison_cool911

1.CustomButton.java文件
package com.example;import android.app.Activity;import android.os.Bundle;public class CustomButton extends Activity {// Called when the activity is first created.public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);}}
2.ButtonTheme.java文件
package com.example;import android.content.Context;import android.graphics.Canvas;import android.util.AttributeSet;import android.widget.Button;public class ButtonTheme extends Button {public ButtonTheme(Context context) {super(context);}public ButtonTheme(Context context, AttributeSet attrs) {super(context, attrs);}protected void onDraw(Canvas canvas) {// sets the button image based on whether the button in its pressed// statesetBackgroundDrawable(getResources().getDrawable(isPressed() ? R.drawable.btn_down : R.drawable.btn_on));super.onDraw(canvas);}}
以上代码即可实现点击按钮的时候切换不同的按钮背景