Android自定义button的实现，未选中，按下，选中效果

package com.test.TestButton;

import android.app.Activity;

import android.content.Context;

import android.graphics.drawable.Drawable;

import android.graphics.drawable.StateListDrawable;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class TestButton extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Integer[] mButtonState = { R.drawable.defaultbutton,

R.drawable.focusedpressed, R.drawable.pressed };

Button mButton = (Button) findViewById(R.id.button);

MyButton myButton = new MyButton(this);

mButton.setBackgroundDrawable(myButton.setbg(mButtonState));

}

class MyButton extends View {

public MyButton(Context context) {

super(context);

}

//以下这个方法也可以把你的图片数组传过来，以StateListDrawable来设置图片状态，来表现button的各中状态。未选中，按下，选中效果。

public StateListDrawable setbg(Integer[] mImageIds) {

StateListDrawable bg = new StateListDrawable();

Drawable normal = this.getResources().getDrawable(mImageIds[0]);

Drawable selected = this.getResources().getDrawable(mImageIds[1]);

Drawable pressed = this.getResources().getDrawable(mImageIds[2]);

bg.addState(View.PRESSED_ENABLED_STATE_SET, pressed);

bg.addState(View.ENABLED_FOCUSED_STATE_SET, selected);

bg.addState(View.ENABLED_STATE_SET, normal);

bg.addState(View.FOCUSED_STATE_SET, selected);

bg.addState(View.EMPTY_STATE_SET, normal);

return bg;

}

}

}