TextView动态属性

TextView动态属性

TextView

边框

<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <!-- 设置圆角 -->
    <corners android:radius="8px" >
    </corners>
    <!-- 填充颜色 -->
    <solid android:color="#f00" >
    </solid>
    <!-- 绘制边框 -->
    <!--
    <stroke
        android:width="2px"
        android:color="#f00" >
    </stroke>
    -->
</shape>

setBackGroud-->setDrawble

为Button或者backGroud设置颜色使用GradientDrawable

 GradientDrawable gd = new GradientDrawable();
  gd.setCornerRadius(UIUtils.dip2Px(5));
  int alhpa = 255;//设置透明度
  int red = random.nextInt(180) + 30;//设置颜色区间在30-220之间
  int green = random.nextInt(180) + 30;
  int blue = random.nextInt(180) + 30;
  int argb = Color.argb(alhpa, red, green, blue);
  gd.setColor(argb);
  tv.setBackground(gd);

动态添加点击selector

1. 定义一个selector文件

<item android:drawable="@drawable/btn_pressed"
android:state_pressed="true"/>
<item android:drawable="@drawable/btn_    normal"/>

2. 动态添加StateListDrawable

//添加点击selector
      GradientDrawable pressed = new GradientDrawable();
      pressed.setCornerRadius(UIUtils.dip2Px(5));
      pressed.setColor(Color.DKGRAY);
      StateListDrawable stateListDrawable = new StateListDrawable();

      stateListDrawable.addState(new int[] { android.R.attr.state_pressed }, pressed);
      stateListDrawable.addState(new int[] {}, normal);