12.值动画、测量规则

/*
* 提示：该行代码过长，系统自动注释不进行高亮。一键复制会移除系统注释 
* public class DetailSafeHolder extends BaseHolder<AppInfo> implements		OnClickListener {	@ViewInject(R.id.safe_layout)	private RelativeLayout safe_layout;	@ViewInject(R.id.safe_content)	private LinearLayout safe_content;	@ViewInject(R.id.safe_arrow)	private ImageView safe_arrow;	ImageView[] ivs;	ImageView[] iv_des;	TextView[] tv_des;	LinearLayout[] des_layout;	@Override	public View initView() {		View view = UiUtils.inflate(R.layout.detail_safe);		ViewUtils.inject(this, view);		ivs = new ImageView[4]; // 初始化标题栏的图片		ivs[0] = (ImageView) view.findViewById(R.id.iv_1);		ivs[1] = (ImageView) view.findViewById(R.id.iv_2);		ivs[2] = (ImageView) view.findViewById(R.id.iv_3);		ivs[3] = (ImageView) view.findViewById(R.id.iv_4);		iv_des = new ImageView[4]; // 初始化每个条目描述的图片		iv_des[0] = (ImageView) view.findViewById(R.id.des_iv_1);		iv_des[1] = (ImageView) view.findViewById(R.id.des_iv_2);		iv_des[2] = (ImageView) view.findViewById(R.id.des_iv_3);		iv_des[3] = (ImageView) view.findViewById(R.id.des_iv_4);		tv_des = new TextView[4]; // 初始化每个条目描述的文本		tv_des[0] = (TextView) view.findViewById(R.id.des_tv_1);		tv_des[1] = (TextView) view.findViewById(R.id.des_tv_2);		tv_des[2] = (TextView) view.findViewById(R.id.des_tv_3);		tv_des[3] = (TextView) view.findViewById(R.id.des_tv_4);		des_layout = new LinearLayout[4]; // 初始化条目线性布局		des_layout[0] = (LinearLayout) view.findViewById(R.id.des_layout_1);		des_layout[1] = (LinearLayout) view.findViewById(R.id.des_layout_2);		des_layout[2] = (LinearLayout) view.findViewById(R.id.des_layout_3);		des_layout[3] = (LinearLayout) view.findViewById(R.id.des_layout_4);		LayoutParams layoutParams = safe_content.getLayoutParams();		layoutParams.height=0;//默认为0		safe_content.setLayoutParams(layoutParams);//必须经过上面这三步才能设置大小		safe_arrow.setImageResource(R.drawable.arrow_down);		return view;	}	@Override	public void refreshView(AppInfo data) {		safe_layout.setOnClickListener(this);		List<String> safeUrl = data.getSafeUrl();		List<String> safeDesUrl = data.getSafeDesUrl();		List<String> safeDes = data.getSafeDes();		List<Integer> safeDesColor = data.getSafeDesColor(); // 0 1 2 3		for (int i = 0; i < 4; i++) {			if (i < safeUrl.size() && i < safeDesUrl.size()					&& i < safeDes.size() && i < safeDesColor.size()) {				ivs[i].setVisibility(View.VISIBLE);				des_layout[i].setVisibility(View.VISIBLE);				bitmapUtils.display(ivs[i], HttpHelper.URL + "image?name="						+ safeUrl.get(i));				bitmapUtils.display(iv_des[i], HttpHelper.URL + "image?name="						+ safeDesUrl.get(i));				tv_des[i].setText(safeDes.get(i));				// 根据服务器数据显示不同的颜色，有可能文字颜色不一样				int color;				int colorType = safeDesColor.get(i);				if (colorType >= 1 && colorType <= 3) {					color = Color.rgb(255, 153, 0); // 00 00 00				} else if (colorType == 4) {					color = Color.rgb(0, 177, 62);				} else {					color = Color.rgb(122, 122, 122);				}				tv_des[i].setTextColor(color);			} else {				ivs[i].setVisibility(View.GONE);				des_layout[i].setVisibility(View.GONE);			}		}	}	boolean flag=false;//默认不展开	@Override	public void onClick(View v) {		if (v.getId() == R.id.safe_layout) {			int  startHeight;			int targetHeight;			if (!flag) {    //  展开的动画  				startHeight=0;				targetHeight=getMeasureHeight();								flag = true;				//safe_content.setVisibility(View.VISIBLE);这样写也可以，不过显的特别突兀				safe_content.getMeasuredHeight();  //  0  			} else {				flag=false;				//safe_content.setVisibility(View.GONE);				startHeight=getMeasureHeight();				targetHeight=0;			}			// 值动画			ValueAnimator animator=ValueAnimator.ofInt(startHeight,targetHeight);			final RelativeLayout.LayoutParams layoutParams = (android.widget.RelativeLayout.LayoutParams) safe_content.getLayoutParams();			animator.addUpdateListener(new AnimatorUpdateListener() {  // 监听值的变化								@Override				public void onAnimationUpdate(ValueAnimator animator) {					int value=(Integer) animator.getAnimatedValue();// 运行当前时间点的一个值					layoutParams.height=value;					safe_content.setLayoutParams(layoutParams);// 刷新界面					System.out.println(value);				}			});						animator.addListener(new AnimatorListener() {  // 监听动画执行				//当动画开始执行的时候调用				@Override				public void onAnimationStart(Animator arg0) {					// TODO Auto-generated method stub									}				@Override				public void onAnimationRepeat(Animator arg0) {									}				@Override				public void onAnimationEnd(Animator arg0) {					if(flag){						safe_arrow.setImageResource(R.drawable.arrow_up);					}else{						safe_arrow.setImageResource(R.drawable.arrow_down);					}				}				@Override				public void onAnimationCancel(Animator arg0) {									}			});						animator.setDuration(500);			animator.start();		}	}	//onMeasure()  制定测量的规则 	// measure() 实际测量 	/**	 * 获取控件实际的高度	 */	public int getMeasureHeight(){		int width = safe_content.getMeasuredWidth();  //  由于宽度不会发生变化  宽度的值取出来		safe_content.getLayoutParams().height = ViewGroup.LayoutParams.WRAP_CONTENT;//  让高度包裹内容，可以不写//得先重新设置完规则再测量		//    参数1  测量控件mode    参数2  大小 		int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);  //  mode+size		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);// 我的高度 最大是1000		// 测量规则 宽度是一个精确的值width, 高度最大是1000,以实际为准		safe_content.measure(widthMeasureSpec, heightMeasureSpec); // 通过该方法重新测量控件 				return safe_content.getMeasuredHeight();	}}
*/

public class DetailDesHolder extends BaseHolder<AppInfo> implements OnClickListener {	@ViewInject(R.id.des_content)	private TextView des_content;	@ViewInject(R.id.des_author)	private TextView des_author;	@ViewInject(R.id.des_arrow)	private ImageView des_arrow;	@ViewInject(R.id.des_layout)	private RelativeLayout des_layout;		@Override	public View initView() {		View view=UiUtils.inflate(R.layout.detail_des);		ViewUtils.inject(this, view);		return view;	}	@Override	public void refreshView(AppInfo data) {		des_content.setText(data.getDes());		des_author.setText("作者:"+data.getAuthor());		des_layout.setOnClickListener(this);				//des_content 起始高度7行的高度		LayoutParams layoutParams = des_content.getLayoutParams();		layoutParams.height=getShortMeasureHeight();		des_content.setLayoutParams(layoutParams);		des_arrow.setImageResource(R.drawable.arrow_down);	}	/**	 * 获取7行的高度	 * @return	 */	public int getShortMeasureHeight(){		// 复制一个新的TextView 用来测量,最好不要在之前的TextView测量 有可能影响其它代码执行		TextView textView=new TextView(UiUtils.getContext());		textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);//设置字体大小14dp		textView.setMaxLines(7);		textView.setLines(7);// 强制有7行		int width=des_content.getMeasuredWidth(); // 开始宽度		//得先重新设置完规则再测量		int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);		textView.measure(widthMeasureSpec, heightMeasureSpec);		return textView.getMeasuredHeight();	}	/**	 * 获取TextView 自己本身的高度	 * @return	 */	public int getLongMeasureHeight(){		int width=des_content.getMeasuredWidth(); // 开始宽度		des_content.getLayoutParams().height= ViewGroup.LayoutParams.WRAP_CONTENT;// 高度包裹内容						int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);		des_content.measure(widthMeasureSpec,heightMeasureSpec);//		return des_content.getMeasuredHeight();	}	boolean flag;// true展开了 false 没有展开，不写的话默认是false	@Override	public void onClick(View v) {		expand();	}	ScrollView scrollView;//	scrollView.scrollTo(0, scrollView.getMeasuredHeight())	/**	 * 获取到界面的ScollView,这样可以点箭头时就到了最后	 */	public ScrollView getScrollView(View view){		ViewParent parent = view.getParent();		if(parent instanceof ViewGroup){			ViewGroup group=(ViewGroup) parent;			if(group instanceof ScrollView){				return (ScrollView)group;			}else{				return getScrollView(group);//用递归，知道获取到ScrollView			}					}else{			return null;		}			}		private void expand() {		scrollView=getScrollView(des_layout);		int startHeight;		int targetHeight;		if(!flag){			flag=true;			startHeight=getShortMeasureHeight();			targetHeight=getLongMeasureHeight();		}else{			flag=false;			startHeight=getLongMeasureHeight();			targetHeight=getShortMeasureHeight();		}		final LayoutParams layoutParams = des_content.getLayoutParams();		ValueAnimator animator=ValueAnimator.ofInt(startHeight,targetHeight);		animator.addUpdateListener(new AnimatorUpdateListener() {						@Override			public void onAnimationUpdate(ValueAnimator animation) {				int value=(Integer) animation.getAnimatedValue();				layoutParams.height=value;				des_content.setLayoutParams(layoutParams);				scrollView.scrollTo(0, scrollView.getMeasuredHeight());// 让scrollView 移动到最下面			}		});		animator.addListener(new AnimatorListener() {  // 监听动画执行			//当动画开始执行的时候调用			@Override			public void onAnimationStart(Animator arg0) {				// TODO Auto-generated method stub							}			@Override			public void onAnimationRepeat(Animator arg0) {							}			@Override			public void onAnimationEnd(Animator arg0) {				if(flag){					des_arrow.setImageResource(R.drawable.arrow_up);				}else{					des_arrow.setImageResource(R.drawable.arrow_down);				}			}			@Override			public void onAnimationCancel(Animator arg0) {							}		});		animator.setDuration(500);//设置动画持续时间		animator.start();	}}	

	@Override	public void onInnerItemClick(int position) {		super.onInnerItemClick(position);		Toast.makeText(UiUtils.getContext(), "position:"+position, 0).show();		AppInfo appInfo = datas.get(position);		Intent intent=new Intent(UiUtils.getContext(), DetailActivity.class);		intent.putExtra("packageName", appInfo.getPackageName());		UiUtils.startActivity(intent);	}

	/**	 * 可以打开activity	 * @param intent	 */	public static void startActivity(Intent intent) {		// 如果不在activity里去打开activity  需要指定任务栈  需要设置标签		if(BaseActivity.activity==null){			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);			getContext().startActivity(intent);		}else{			BaseActivity.activity.startActivity(intent);		}	}

	public static BaseActivity activity;	@Override	protected void onResume() {		super.onResume();		activity=this;	}	@Override	protected void onPause() {		super.onPause();		activity=null;	}