GradientDrawable	动态图形(圆角矩形等)

StateListDrawable	动态选择器

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for (int i = 0; i < mDatas.size(); i++) {
	TextView view = new TextView(UiUtils.getContext());
	view.setText(mDatas.get(i));
//            view.setBackgroundResource(R.drawable.hot_item);//实现圆角矩形 会同时设置背景颜色
	//所以要设置不同颜色的同时只能通过代码来实现圆角矩形
	GradientDrawable state_nomal = new GradientDrawable();
	state_nomal.setCornerRadius(8);
	int a = 200 + mRandom.nextInt(55);
	int r = 100 + mRandom.nextInt(155);
	int g = 100 + mRandom.nextInt(155);
	int b = 100 + mRandom.nextInt(155);
	state_nomal.setColor(Color.argb(a, r, g, b));
//            view.setBackgroundDrawable(state_nomal);

	GradientDrawable state_pressed = new GradientDrawable();
	state_pressed.setCornerRadius(8);
	state_pressed.setColor(Color.GRAY);

	//代码实现选择器
	StateListDrawable stateListDrawable = new StateListDrawable();
	stateListDrawable.addState(new int[]{android.R.attr.state_pressed}, state_pressed);  //按下状态
	stateListDrawable.addState(new int[]{}, state_nomal);
	view.setBackgroundDrawable(stateListDrawable);

	view.setOnClickListener(new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			Toast.makeText(UiUtils.getContext(), ((TextView) v).getText(), Toast.LENGTH_SHORT).show();
		}
	});

	view.setTextColor(Color.WHITE);
	view.setPadding(5, 5, 5, 5);
	view.setGravity(Gravity.CENTER);
	view.setTextSize(14);

	flowLayout.addView(view);//触发重绘
}