• 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
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