Android 收縮展開動畫
阿新 • • 發佈：2019-02-06
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${packageName}.${activityClass}" >
<ListView
android:id lv_item.xml
<?xml version="1.0" encoding="utf-8"?> LogAdapter.java
package com.example.expanddemo;
import java.util.List;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class LogAdapter extends BaseAdapter {
private LayoutInflater inflater;
private List<LogModel> logModels;
private Context context;
public LogAdapter(Context context, List<LogModel> itemModels) {
inflater = LayoutInflater.from(context);
this.logModels = itemModels;
this.context = context;
}
@Override
public int getCount() {
return logModels.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LogModel itemModel = logModels.get(position);
ViewHolder holder = null;
View relativeView = null;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.lv_item, null);
holder.tVprojectTitle = (TextView) convertView.findViewById(R.id.tv_projectcontent_title);
holder.tVprojectContent = (TextView) convertView.findViewById(R.id.tv_projectcontent_content);
holder.tVprojectName = (TextView) convertView.findViewById(R.id.tv_projectname_content);
holder.tVprojectStage = (TextView) convertView.findViewById(R.id.tv_projectstage_content);
holder.linearLayout = (LinearLayout) convertView.findViewById(R.id.timeline_item_top);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
relativeView = (RelativeLayout) convertView.findViewById(R.id.timeline_item_bottom);
relativeView.measure(0, 0);
if (itemModel.isVisiable()) {
holder.linearLayout.setBackgroundResource(R.drawable.timeline_cont_p);
holder.tVprojectTitle.setTextColor(context.getResources().getColor(R.color.white));
holder.tVprojectContent.setTextColor(context.getResources().getColor(R.color.white));
((LinearLayout.LayoutParams) relativeView.getLayoutParams()).bottomMargin = 0;
relativeView.setVisibility(View.VISIBLE);
} else {
holder.linearLayout.setBackgroundResource(R.drawable.timeline_cont);
holder.tVprojectContent.setTextColor(context.getResources().getColor(R.color.gray1));
((LinearLayout.LayoutParams) relativeView.getLayoutParams()).bottomMargin = (-1) * relativeView.getMeasuredHeight();
relativeView.setVisibility(View.GONE);
}
holder.tVprojectContent.setText(itemModel.getProjectContent());
holder.tVprojectName.setText(itemModel.getProjectName());
holder.tVprojectStage.setText(itemModel.getProjectStage());
return convertView;
}
public void refuseAdapter(List<LogModel> datas) {
this.logModels = datas;
this.notifyDataSetChanged();
}
class ViewHolder {
TextView tVprojectContent, tVprojectName, tVprojectStage, tVprojectTitle;
LinearLayout linearLayout;
}
}
LogModel.java
package com.example.expanddemo;
public class LogModel {
private String projectContent;
private String projectName;
private String projectStage;
private boolean isVisiable = true;
public LogModel(String projectContent, String projectName, String projectStage) {
this.projectContent = projectContent;
this.projectName = projectName;
this.projectStage = projectStage;
}
public String getProjectContent() {
return projectContent;
}
public void setProjectContent(String projectContent) {
this.projectContent = projectContent;
}
public String getProjectName() {
return projectName;
}
public void setProjectName(String projectName) {
this.projectName = projectName;
}
public String getProjectStage() {
return projectStage;
}
public void setProjectStage(String projectStage) {
}
public boolean isVisiable() {
return isVisiable;
}
public void setVisiable(boolean isVisiable) {
this.isVisiable = isVisiable;
}
}
ExpandAnimation.java
package com.example.expanddemo;
import android.util.Log;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
public class ExpandAnimation extends Animation {
private View view;
private LinearLayout.LayoutParams mViewLayoutParams;
private int mMarginStart, mMarginEnd;
private boolean mIsVisibleAfter = false;
private boolean mWasEndedAlready = false;
public ExpandAnimation(View view, long duration) {
setDuration(duration);
this.view = view;
mViewLayoutParams = (LayoutParams) view.getLayoutParams();
mIsVisibleAfter = (mViewLayoutParams.bottomMargin == 0);
mMarginStart = mViewLayoutParams.bottomMargin;
view.measure(0, 0);
mMarginEnd = (mMarginStart == 0) ? (0 - view.getMeasuredHeight()) : 0;
// mMarginEnd = mMarginStart - view.getMeasuredHeight();
view.setVisibility(View.VISIBLE);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
Log.i("info", "mMarginStart-->>" + mMarginStart + ", mMarginEnd-->>" + mMarginEnd + ", interpolatedTime-->>" + interpolatedTime);
super.applyTransformation(interpolatedTime, t);
if (interpolatedTime < 1f) {
mViewLayoutParams.bottomMargin = mMarginStart + (int) ((mMarginEnd - mMarginStart) * interpolatedTime);
view.requestLayout();
} else if (!mWasEndedAlready) {
mViewLayoutParams.bottomMargin = mMarginEnd;
view.requestLayout();
if (mIsVisibleAfter)
view.setVisibility(View.GONE);
mWasEndedAlready = true;
}
}
}
MainActivity.java
package com.example.expanddemo;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
public class MainActivity extends Activity {
private ListView listView;
private LogAdapter adapter;
/** 控制重複點選 */
private boolean animationFinished = true;
private List<LogModel> logModels;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView1);
getDatas();
adapter = new LogAdapter(this, logModels);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (!animationFinished)
return;
View animationView = view.findViewById(R.id.timeline_item_bottom);
ExpandAnimation animation = new ExpandAnimation(animationView, 300);
animation.setAnimationListener(new MyAnimationListener(position));
animationView.startAnimation(animation);
}
});
}
private void getDatas() {
logModels = new ArrayList<LogModel>();
for (int i = 0; i < 5; i++) {
LogModel logModel = new LogModel("測試" + i, "大資料專案" + i, "第 " + i + " 階段");
logModels.add(logModel);
}
}
class MyAnimationListener implements AnimationListener {
private int position;
private LinearLayout linearLayout;
private TextView tVprojectTitle, tVprojectContent;
public MyAnimationListener(int position) {
this.position = position;
init();
}
private void init() {
View view = listView.getChildAt(position);
linearLayout = (LinearLayout) view.findViewById(R.id.timeline_item_top);
tVprojectTitle = (TextView) view.findViewById(R.id.tv_projectcontent_title);
tVprojectContent = (TextView) view.findViewById(R.id.tv_projectcontent_content);
}
@Override
public void onAnimationStart(Animation arg0) {
animationFinished = false;
LogModel item = logModels.get(position);
if (!item.isVisiable()) {
linearLayout.setBackgroundResource(R.drawable.timeline_cont_p);
tVprojectTitle.setTextColor(getResources().getColor(R.color.white));
tVprojectContent.setTextColor(getResources().getColor(R.color.white));
}
}
@Override
public void onAnimationRepeat(Animation arg0) {
}
@Override
public void onAnimationEnd(Animation arg0) {
LogModel item = logModels.get(position);
item.setVisiable(!item.isVisiable());
adapter.notifyDataSetChanged();
animationFinished = true;
}
}
}