12.值动画、测量规则

应用详情安全界面

DetailSafeHolder

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();

}

}

[/code]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

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();

}

}

[/code]

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

@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);

}

[/code]UiUtils

/**

 * 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);

}

}

[/code]BaseActivity

public static BaseActivity activity;

@Override

protected void onResume() {

super.onResume();

activity=this;

}

@Override

protected void onPause() {

super.onPause();

activity=null;

}

[/code]

来自为知笔记(Wiz)

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