Android自定义button的实现，未选中，按下，选中效果

yangguangfu

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 {
<div class="articalContent">  @Override
    public voidonCreate(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));
    }

    classMyButton 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 = newStateListDrawable();
         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;
      }
    }

}