在代码中实现背景单击变换颜色和TextView变换文字颜色

效果:
点击前:
[img]http://dl2.iteye.com/upload/attachment/0093/6747/421353dc-c6b1-3518-8f00-13d7ba03cc37.png[/img]
点击中:
[img]http://dl2.iteye.com/upload/attachment/0093/6749/78eb3e2e-6064-36fb-8067-eaa78486830f.png[/img]

布局文件中代码:

...
<LinearLayout android:id="@+id/layout" android:layout_width="match_parent" android:layout_height="60dip" android:orientation="vertical" android:clickable="true">
                <TextView android:textSize="20sp" android:gravity="center" android:id="@+id/textView" android:layout_width="fill_parent" android:layout_height="match_parent" android:text="按钮"/>
</LinearLayout>
...

在代码中设置这些颜色:

...
@Override
protected void onCreate(Bundle savedInstanceState) {
  ...
  LinearLayout layout = (LinearLayout) findViewById(R.id.layout);
  TextView textView = (TextView) findViewById(R.id.textView);

  setPressedBg(layout,"#00ffff","#00ff00","#00ff00");
  setTextPressedBg(textView,"#000000","#ffffff","#ffffff");
  textView.setDuplicateParentStateEnabled(true);  //子视图与父控件perssed 等状态保持一致
}

  /**
   * 设置单击背景色
   * @param view 控件
   * @param normal 未选择时的背景色
   * @param focused 选择时的背景色
   * @param pressed 选择时的背景色
   */
  public void setPressedBg(View view, String normal,String focused, String pressed) { 
      int[][] states = new int[6][];  
      states[0] = new int[] { android.R.attr.state_pressed, android.R.attr.state_enabled };   
      states[1] = new int[] { android.R.attr.state_enabled, android.R.attr.state_focused };   
      states[2] = new int[] { android.R.attr.state_enabled };   
      states[3] = new int[] { android.R.attr.state_focused ,android.R.attr.state_window_focused};   
      states[4] = new int[] { android.R.attr.state_window_focused }; 

      StateListDrawable bg = new StateListDrawable(); 
      bg.addState(states[0], new ColorDrawable(Color.parseColor(pressed))); 
      bg.addState(states[3], new ColorDrawable(Color.parseColor(focused))); 
      bg.addState(states[2], new ColorDrawable(Color.parseColor(normal)));

      view.setBackground(bg);
  }

  /**
   * 对TextView设置不同状态时其文字颜色。
   * @param textView 控件
   * @param normal 未选择时的文字颜色
   * @param pressed 选择时的文字颜色
   * @param focused 选择时的文字颜色
   */
  private void setTextPressedBg(TextView textView,String normal, String pressed, String focused) {
    int[][] states = new int[6][];
    states[0] = new int[] { android.R.attr.state_pressed, android.R.attr.state_enabled };
    states[1] = new int[] { android.R.attr.state_enabled, android.R.attr.state_focused };
    states[2] = new int[] { android.R.attr.state_enabled };
    states[3] = new int[] { android.R.attr.state_focused };
    states[4] = new int[] { android.R.attr.state_window_focused };
    states[5] = new int[] {};

    int normalColor = Color.parseColor(normal);
    int pressedColor = Color.parseColor(pressed);
    int focusedColor = Color.parseColor(focused);

    ColorStateList colorList = new ColorStateList(states, new int[] {pressedColor,focusedColor,normalColor,focusedColor,focusedColor,normalColor});

    textView.setTextColor(colorList);
  }
...