12.值动画、测量规则

应用详情安全界面
DetailSafeHolder  
  1. public class DetailSafeHolder extends BaseHolder<AppInfo> implements
  2. 		OnClickListener {
  3. 	@ViewInject(R.id.safe_layout)
  4. 	private RelativeLayout safe_layout;
  5. 	@ViewInject(R.id.safe_content)
  6. 	private LinearLayout safe_content;
  7. 	@ViewInject(R.id.safe_arrow)
  8. 	private ImageView safe_arrow;
  9. 	ImageView[] ivs;
  10. 	ImageView[] iv_des;
  11. 	TextView[] tv_des;
  12. 	LinearLayout[] des_layout;
  14. 	@Override
  15. 	public View initView() {
  16. 		View view = UiUtils.inflate(R.layout.detail_safe);
  17. 		ViewUtils.inject(this, view);
  19. 		ivs = new ImageView[4]; // 初始化标题栏的图片
  20. 		ivs[0] = (ImageView) view.findViewById(R.id.iv_1);
  21. 		ivs[1] = (ImageView) view.findViewById(R.id.iv_2);
  22. 		ivs[2] = (ImageView) view.findViewById(R.id.iv_3);
  23. 		ivs[3] = (ImageView) view.findViewById(R.id.iv_4);
  24. 		iv_des = new ImageView[4]; // 初始化每个条目描述的图片
  25. 		iv_des[0] = (ImageView) view.findViewById(R.id.des_iv_1);
  26. 		iv_des[1] = (ImageView) view.findViewById(R.id.des_iv_2);
  27. 		iv_des[2] = (ImageView) view.findViewById(R.id.des_iv_3);
  28. 		iv_des[3] = (ImageView) view.findViewById(R.id.des_iv_4);
  29. 		tv_des = new TextView[4]; // 初始化每个条目描述的文本
  30. 		tv_des[0] = (TextView) view.findViewById(R.id.des_tv_1);
  31. 		tv_des[1] = (TextView) view.findViewById(R.id.des_tv_2);
  32. 		tv_des[2] = (TextView) view.findViewById(R.id.des_tv_3);
  33. 		tv_des[3] = (TextView) view.findViewById(R.id.des_tv_4);
  35. 		des_layout = new LinearLayout[4]; // 初始化条目线性布局
  36. 		des_layout[0] = (LinearLayout) view.findViewById(R.id.des_layout_1);
  37. 		des_layout[1] = (LinearLayout) view.findViewById(R.id.des_layout_2);
  38. 		des_layout[2] = (LinearLayout) view.findViewById(R.id.des_layout_3);
  39. 		des_layout[3] = (LinearLayout) view.findViewById(R.id.des_layout_4);
  41. 		LayoutParams layoutParams = safe_content.getLayoutParams();
  42. 		layoutParams.height=0;//默认为0
  43. 		safe_content.setLayoutParams(layoutParams);
  44. //必须经过上面这三步才能设置大小
  45. 		safe_arrow.setImageResource(R.drawable.arrow_down);
  46. 		return view;
  47. 	}
  49. 	@Override
  50. 	public void refreshView(AppInfo data) {
  51. 		safe_layout.setOnClickListener(this);
  53. 		List<String> safeUrl = data.getSafeUrl();
  54. 		List<String> safeDesUrl = data.getSafeDesUrl();
  55. 		List<String> safeDes = data.getSafeDes();
  56. 		List<Integer> safeDesColor = data.getSafeDesColor(); // 0 1 2 3
  57. 		for (int i = 0; i < 4; i++) {
  58. 			if (i < safeUrl.size() && i < safeDesUrl.size()
  59. 					&& i < safeDes.size() && i < safeDesColor.size()) {
  60. 				ivs[i].setVisibility(View.VISIBLE);
  61. 				des_layout[i].setVisibility(View.VISIBLE);
  62. 				bitmapUtils.display(ivs[i], HttpHelper.URL + "image?name="
  63. 						+ safeUrl.get(i));
  64. 				bitmapUtils.display(iv_des[i], HttpHelper.URL + "image?name="
  65. 						+ safeDesUrl.get(i));
  66. 				tv_des[i].setText(safeDes.get(i));
  67. 				// 根据服务器数据显示不同的颜色，有可能文字颜色不一样
  68. 				int color;
  69. 				int colorType = safeDesColor.get(i);
  70. 				if (colorType >= 1 && colorType <= 3) {
  71. 					color = Color.rgb(255, 153, 0); // 00 00 00
  72. 				} else if (colorType == 4) {
  73. 					color = Color.rgb(0, 177, 62);
  74. 				} else {
  75. 					color = Color.rgb(122, 122, 122);
  76. 				}
  77. 				tv_des[i].setTextColor(color);
  79. 			} else {
  80. 				ivs[i].setVisibility(View.GONE);
  81. 				des_layout[i].setVisibility(View.GONE);
  82. 			}
  84. 		}
  86. 	}
  88. 	boolean flag=false;//默认不展开
  90. 	@Override
  91. 	public void onClick(View v) {
  92. 		if (v.getId() == R.id.safe_layout) {
  93. 			int  startHeight;
  94. 			int targetHeight;
  95. 			if (!flag) {    //  展开的动画  
  96. 				startHeight=0;
  97. 				targetHeight=getMeasureHeight();
  98. 				
  99. 				flag = true;
  100. 				//safe_content.setVisibility(View.VISIBLE);这样写也可以，不过显的特别突兀
  101. 				safe_content.getMeasuredHeight();  //  0  
  102. 			} else {
  103. 				flag=false;
  104. 				//safe_content.setVisibility(View.GONE);
  105. 				startHeight=getMeasureHeight();
  106. 				targetHeight=0;
  107. 			}
  108. 			// 值动画
  109. 			ValueAnimator animator=ValueAnimator.ofInt(startHeight,targetHeight);
  110. 			final RelativeLayout.LayoutParams layoutParams = (android.widget.RelativeLayout.LayoutParams) safe_content.getLayoutParams();
  111. 			animator.addUpdateListener(new AnimatorUpdateListener() {  // 监听值的变化
  112. 				
  113. 				@Override
  114. 				public void onAnimationUpdate(ValueAnimator animator) {
  115. 					int value=(Integer) animator.getAnimatedValue();// 运行当前时间点的一个值
  116. 					layoutParams.height=value;
  117. 					safe_content.setLayoutParams(layoutParams);// 刷新界面
  118. 					System.out.println(value);
  119. 				}
  120. 			});
  121. 			
  122. 			animator.addListener(new AnimatorListener() {  // 监听动画执行
  123. 				//当动画开始执行的时候调用
  124. 				@Override
  125. 				public void onAnimationStart(Animator arg0) {
  126. 					// TODO Auto-generated method stub
  127. 					
  128. 				}
  129. 				@Override
  130. 				public void onAnimationRepeat(Animator arg0) {
  131. 					
  132. 				}
  133. 				@Override
  134. 				public void onAnimationEnd(Animator arg0) {
  135. 					if(flag){
  136. 						safe_arrow.setImageResource(R.drawable.arrow_up);
  137. 					}else{
  138. 						safe_arrow.setImageResource(R.drawable.arrow_down);
  139. 					}
  140. 				}
  141. 				@Override
  142. 				public void onAnimationCancel(Animator arg0) {
  143. 					
  144. 				}
  145. 			});
  146. 			
  147. 			animator.setDuration(500);
  148. 			animator.start();
  149. 		}
  150. 	}
  151. 	//onMeasure()  制定测量的规则 
  152. 	// measure() 实际测量 
  153. 	/**
  154. 	 * 获取控件实际的高度
  155. 	 */
  156. 	public int getMeasureHeight(){
  157. 		int width = safe_content.getMeasuredWidth();  //  由于宽度不会发生变化  宽度的值取出来
  158. 		safe_content.getLayoutParams().height = ViewGroup.LayoutParams.WRAP_CONTENT;//  让高度包裹内容，可以不写
  159. //得先重新设置完规则再测量
  160. 		//    参数1  测量控件mode    参数2  大小 
  161. 		int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);  //  mode+size
  162. 		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);// 我的高度 最大是1000
  163. 		// 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
  164. 		safe_content.measure(widthMeasureSpec, heightMeasureSpec); // 通过该方法重新测量控件 
  165. 		
  166. 		return safe_content.getMeasuredHeight();
  167. 	}
  169. }
应用详情描述界面
DetailDesHolder ：这个麻烦点，因为它默认是从7行的高度到包裹内容，所以得先计算出7行的高度
  1. public class DetailDesHolder extends BaseHolder<AppInfo> implements OnClickListener {
  2. 	@ViewInject(R.id.des_content)
  3. 	private TextView des_content;
  4. 	@ViewInject(R.id.des_author)
  5. 	private TextView des_author;
  6. 	@ViewInject(R.id.des_arrow)
  7. 	private ImageView des_arrow;
  8. 	@ViewInject(R.id.des_layout)
  9. 	private RelativeLayout des_layout;
  10. 	
  11. 	@Override
  12. 	public View initView() {
  13. 		View view=UiUtils.inflate(R.layout.detail_des);
  14. 		ViewUtils.inject(this, view);
  15. 		return view;
  16. 	}
  18. 	@Override
  19. 	public void refreshView(AppInfo data) {
  20. 		des_content.setText(data.getDes());
  21. 		des_author.setText("作者:"+data.getAuthor());
  22. 		des_layout.setOnClickListener(this);
  23. 		
  24. 		//des_content 起始高度7行的高度
  25. 		LayoutParams layoutParams = des_content.getLayoutParams();
  26. 		layoutParams.height=getShortMeasureHeight();
  27. 		des_content.setLayoutParams(layoutParams);
  28. 		des_arrow.setImageResource(R.drawable.arrow_down);
  29. 	}
  30. 	/**
  31. 	 * 获取7行的高度
  32. 	 * @return
  33. 	 */
  34. 	public int getShortMeasureHeight(){
  35. 		// 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
  36. 		TextView textView=new TextView(UiUtils.getContext());
  37. 		textView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 14);//设置字体大小14dp
  38. 		textView.setMaxLines(7);
  39. 		textView.setLines(7);// 强制有7行
  40. 		int width=des_content.getMeasuredWidth(); // 开始宽度
  41. 		//得先重新设置完规则再测量
  42. 		int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);
  43. 		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);
  44. 		textView.measure(widthMeasureSpec, heightMeasureSpec);
  45. 		return textView.getMeasuredHeight();
  46. 	}
  47. 	/**
  48. 	 * 获取TextView 自己本身的高度
  49. 	 * @return
  50. 	 */
  51. 	public int getLongMeasureHeight(){
  52. 		int width=des_content.getMeasuredWidth(); // 开始宽度
  53. 		des_content.getLayoutParams().height= ViewGroup.LayoutParams.WRAP_CONTENT;// 高度包裹内容
  54. 		
  55. 		
  56. 		int widthMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.EXACTLY, width);
  57. 		int heightMeasureSpec=MeasureSpec.makeMeasureSpec(MeasureSpec.AT_MOST, 1000);
  58. 		des_content.measure(widthMeasureSpec,heightMeasureSpec);//
  59. 		return des_content.getMeasuredHeight();
  60. 	}
  61. 	boolean flag;// true展开了 false 没有展开，不写的话默认是false
  62. 	@Override
  63. 	public void onClick(View v) {
  64. 		expand();
  65. 	}
  66. 	ScrollView scrollView;
  67. //	scrollView.scrollTo(0, scrollView.getMeasuredHeight())
  68. 	/**
  69. 	 * 获取到界面的ScollView,这样可以点箭头时就到了最后
  70. 	 */
  71. 	public ScrollView getScrollView(View view){
  72. 		ViewParent parent = view.getParent();
  73. 		if(parent instanceof ViewGroup){
  74. 			ViewGroup group=(ViewGroup) parent;
  75. 			if(group instanceof ScrollView){
  76. 				return (ScrollView)group;
  77. 			}else{
  78. 				return getScrollView(group);//用递归，知道获取到ScrollView
  79. 			}
  80. 			
  81. 		}else{
  82. 			return null;
  83. 		}
  84. 		
  85. 	}
  86. 	
  87. 	private void expand() {
  88. 		scrollView=getScrollView(des_layout);
  89. 		int startHeight;
  90. 		int targetHeight;
  91. 		if(!flag){
  92. 			flag=true;
  93. 			startHeight=getShortMeasureHeight();
  94. 			targetHeight=getLongMeasureHeight();
  95. 		}else{
  96. 			flag=false;
  97. 			startHeight=getLongMeasureHeight();
  98. 			targetHeight=getShortMeasureHeight();
  99. 		}
  100. 		final LayoutParams layoutParams = des_content.getLayoutParams();
  101. 		ValueAnimator animator=ValueAnimator.ofInt(startHeight,targetHeight);
  102. 		animator.addUpdateListener(new AnimatorUpdateListener() {
  103. 			
  104. 			@Override
  105. 			public void onAnimationUpdate(ValueAnimator animation) {
  106. 				int value=(Integer) animation.getAnimatedValue();
  107. 				layoutParams.height=value;
  108. 				des_content.setLayoutParams(layoutParams);
  109. 				scrollView.scrollTo(0, scrollView.getMeasuredHeight());// 让scrollView 移动到最下面
  110. 			}
  111. 		});
  112. 		animator.addListener(new AnimatorListener() {  // 监听动画执行
  113. 			//当动画开始执行的时候调用
  114. 			@Override
  115. 			public void onAnimationStart(Animator arg0) {
  116. 				// TODO Auto-generated method stub
  117. 				
  118. 			}
  119. 			@Override
  120. 			public void onAnimationRepeat(Animator arg0) {
  121. 				
  122. 			}
  123. 			@Override
  124. 			public void onAnimationEnd(Animator arg0) {
  125. 				if(flag){
  126. 					des_arrow.setImageResource(R.drawable.arrow_up);
  127. 				}else{
  128. 					des_arrow.setImageResource(R.drawable.arrow_down);
  129. 				}
  130. 			}
  131. 			@Override
  132. 			public void onAnimationCancel(Animator arg0) {
  133. 				
  134. 			}
  135. 		});
  136. 		animator.setDuration(500);//设置动画持续时间
  137. 		animator.start();
  138. 	}
  139. }
附件里是一个兼容版本的值动画第三方架包，导包的时候导这个
修改ListBaseAdapter，添加这个方法，每个应用界面、游戏界面就都能点listview了
  1. 	@Override
  2. 	public void onInnerItemClick(int position) {
  3. 		super.onInnerItemClick(position);
  4. 		Toast.makeText(UiUtils.getContext(), "position:"+position, 0).show();
  5. 		AppInfo appInfo = datas.get(position);
  6. 		Intent intent=new Intent(UiUtils.getContext(), DetailActivity.class);
  7. 		intent.putExtra("packageName", appInfo.getPackageName());
  8. 		UiUtils.startActivity(intent);
  9. 	}
UiUtils 
  1. 	/**
  2. 	 * 可以打开activity
  3. 	 * @param intent
  4. 	 */
  5. 	public static void startActivity(Intent intent) {
  6. 		// 如果不在activity里去打开activity  需要指定任务栈  需要设置标签
  7. 		if(BaseActivity.activity==null){
  8. 			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
  9. 			getContext().startActivity(intent);
  10. 		}else{
  11. 			BaseActivity.activity.startActivity(intent);
  12. 		}
  13. 	}
BaseActivity 
 
  1. 	public static BaseActivity activity;
  2. 	@Override
  3. 	protected void onResume() {
  4. 		super.onResume();
  5. 		activity=this;
  6. 	}
  7. 	@Override
  8. 	protected void onPause() {
  9. 		super.onPause();
  10. 		activity=null;
  11. 	}

 












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    原文地址：https://www.cnblogs.com/sixrain/p/4979261.html