如何在android中单击listview适配器时展开和折叠视图 _如何在

风流不在谈锋胜，袖手无言味最长。这篇文章主要讲述如何在android中单击listview适配器时展开和折叠视图相关的知识，希望能为你提供帮助。
我正在开发android应用程序，其中我想向用户显示一些优惠券，为此我使用自定义ListView并设置自定义布局。在自定义布局我想扩展和折叠相关布局，当点击textview，下面是我的代码为这个：
【如何在android中单击listview适配器时展开和折叠视图】Coupon_Layout.xml：

< ?xml version="1.0" encoding="utf-8"?> < RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> < TextView android:id="@+id/coupon_code" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginStart="20dp" android:layout_marginTop="10dp" android:layout_marginBottom="20dp" android:background="@drawable/dash_rectangular_background" android:padding="15dp" android:text="FIRST10" android:textColor="@color/input_login" android:textSize="16.5sp" /> < TextView android:id="@+id/coupon_percentage" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/coupon_code" android:layout_alignBottom="@+id/coupon_code" android:layout_marginStart="10dp" android:layout_toEndOf="@+id/coupon_code" android:maxLines="2" android:text="Get 10?/- off on your 1st ride*." android:textColor="@color/input_login" android:textSize="16sp" /> < TextView android:id="@+id/coupon_details" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignStart="@+id/coupon_code" android:layout_below="@+id/coupon_percentage" android:layout_marginTop="24dp" android:ellipsize="end" android:maxLines="2" android:text="*Only for new user." android:textColor="@color/input_login" android:textSize="16sp" /> < TextView android:id="@+id/tv_details" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/coupon_details" android:layout_marginStart="5dp" android:layout_toEndOf="@+id/coupon_details" android:background="@null" android:text="Details" android:textSize="16sp" android:textColor="@color/bg_main" android:textAllCaps="false"/> < RelativeLayout android:id="@+id/details_layout" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/coupon_details" android:layout_marginTop="10dp"> < ImageView android:id="@+id/imageView2" android:layout_width="15dp" android:layout_height="15dp" android:layout_alignParentStart="true" android:layout_centerVertical="true" android:layout_marginStart="16dp" android:background="#0000" android:src="https://www.songbingjia.com/android/@drawable/ic_dot_bullet" /> < TextView android:id="@+id/tv_limitation" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginStart="19dp" android:layout_toEndOf="@+id/imageView2" android:text="You can avail this offer on your 1st ride" android:textSize="15sp" /> < /RelativeLayout> < View android:id="@+id/v_seprator_coupon_2" style="@style/Divider_History" android:layout_below="@+id/details_layout" android:layout_alignParentStart="true" android:layout_marginTop="15dp" /> < /RelativeLayout>

coupon_adapter.java

public class Coupon_Adapter extends BaseAdapter{private Activity activity; private LayoutInflater inflater; private List< Coupon_List> couponList; private TextView coupon_description,coupon_percentage,coupon_code,details,limitations; private Coupon_List coupon_list; private RelativeLayout details_layout; private boolean isexpand = false; public Coupon_Adapter(Activity activity, List< Coupon_List> couponList) { this.activity = activity; this.couponList = couponList; }@Override public int getCount() { return couponList.size(); }@Override public Object getItem(int i) { return couponList.get(i); }@Override public long getItemId(int i) { return i; }@Override public View getView(int i, View view, ViewGroup viewGroup) { if(inflater == null){ inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } if(view == null){ view = inflater.inflate(R.layout.coupon_layout,null); } coupon_code = view.findViewById(R.id.coupon_code); coupon_description =view.findViewById(R.id.coupon_details); coupon_percentage = view.findViewById(R.id.coupon_percentage); limitations = view.findViewById(R.id.tv_limitation); details = view.findViewById(R.id.tv_details); details_layout = view.findViewById(R.id.details_layout); collapse(details_layout); details.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(!isexpand) { Log.d("texview onclick listner","true"); expand(details_layout); }else { collapse(details_layout); } } }); coupon_list = couponList.get(i); coupon_code.setText(coupon_list.getCoupon_code()); Log.d("coupon list",coupon_list.getCoupon_code()); coupon_percentage.setText(coupon_list.getCoupon_percentage()); // Log.d("coupon list",coupon_list.getCoupon_description()); coupon_description.setText(coupon_list.getCoupon_detail_info()); Log.d("coupon list",coupon_list.getCoupon_limitation()); limitations.setText(coupon_list.getCoupon_detail_info()); return view; }public void expand(final View v) { v.measure(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT); final int targetHeight = v.getMeasuredHeight(); // Older versions of android (pre API 21) cancel animations for views with a height of 0. v.getLayoutParams().height = 1; v.setVisibility(View.VISIBLE); Animation a = new Animation() { @Override protected void applyTransformation(float interpolatedTime, Transformation t) { v.getLayoutParams().height = interpolatedTime == 1 ? RelativeLayout.LayoutParams.WRAP_CONTENT : (int)(targetHeight * interpolatedTime); v.requestLayout(); }@Override public boolean willChangeBounds() { return true; } }; // 1dp/ms a.setDuration((int)(targetHeight / v.getContext().getResources().getDisplayMetrics().density)); v.startAnimation(a); isexpand = true; }public void collapse(final View v) { final int initialHeight = v.getMeasuredHeight(); Animation a = new Animation() { @Override protected void applyTransformation(float interpolatedTime, Transformation t) { if(interpolatedTime == 1){ v.setVisibility(View.GONE); }else{ v.getLayoutParams().height = initialHeight - (int)(initialHeight * interpolatedTime); v.requestLayout(); } }@Override public boolean willChangeBounds() { return true; } }; // 1dp/ms a.setDuration((int)(initialHeight / v.getContext().getResources().getDisplayMetrics().density)); v.startAnimation(a); isexpand = false; } }

我使用该方法来扩展和折叠视图，它在其他活动中工作，我调试代码，当我点击textview它进入setOnClickListener但不扩展或折叠我的视图。请帮助我解决这个问题。
答案改变太多了。将您的drawable和颜色添加到文本中，因为我在测试时删除了它们，这里我修改了您的代码和xml。

< ?xml version="1.0" encoding="utf-8"?> < LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:orientation="vertical" android:animateLayoutChanges="true" android:animationCache="true" android:layout_height="match_parent"> < RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> < TextView android:id="@+id/coupon_code" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentStart="true" android:layout_alignParentTop="true" android:layout_marginBottom="20dp" android:layout_marginStart="20dp" android:layout_marginTop="10dp" android:padding="15dp" android:text="FIRST10" android:textSize="16.5sp" /> < TextView android:id="@+id/coupon_percentage" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBaseline="@+id/coupon_code" android:layout_alignBottom="@+id/coupon_code" android:layout_marginStart="10dp" android:layout_toEndOf="@+id/coupon_code" android:maxLines="2" android:text="Get 10?/- off on your 1st ride*."android:textSize="16sp" /> < TextView android:id="@+id/coupon_details" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignStart="@+id/coupon_code" android:layout_below="@+id/coupon_percentage" android:layout_marginTop="24dp" android:ellipsize="end" android:maxLines="2" android:text="*Only for new user." android:textSize="16sp" /> < TextView android:id="@+id/tv_details" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/coupon_details" android:layout_marginStart="5dp" android:layout_toEndOf="@+id/coupon_details" android:background="@null" android:text="Details" android:textAllCaps="false" android:textSize="16sp" /> < RelativeLayout android:id="@+id/details_layout" android:layout_width="wrap_content" android:background="@color/colorAccent" android:layout_height="wrap_content"android:layout_below="@+id/coupon_details" android:layout_marginTop="10dp"> < ImageView android:id="@+id/imageView2" android:layout_width="15dp" android:layout_height="15dp" android:layout_alignParentStart="true" android:layout_centerVertical="true" android:layout_marginStart="16dp" android:background="#0000" /> < TextView android:id="@+id/tv_limitation" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginStart="19dp" android:layout_toEndOf="@+id/imageView2" android:text="You can avail this offer on your 1st ride" android:textSize="15sp" /> < /RelativeLayout> < /RelativeLayout> < /LinearLayout>

并在适配器类中进行更改，即Coupon_Adapter
//在适配器类的构造函数中添加此行。

inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

更改你的onView并添加你的代码，我还提供了一种更简单的方法来显示隐藏视图。

@Override public View getView(int i, View view, ViewGroup viewGroup) {final Holder listViewHolder; if (view == null) { listViewHolder = new Holder(); view = inflater.inflate(R.layout.coupon_layout,viewGroup,false); listViewHolder.coupon_code = view.findViewById(R.id.coupon_code); listViewHolder.coupon_description =view.findViewById(R.id.coupon_details); listViewHolder.coupon_percentage = view.findViewById(R.id.coupon_percentage); listViewHolder.limitations = view.findViewById(R.id.tv_limitation); listViewHolder.details = view.findViewById(R.id.tv_details); listViewHolder.details_layout = view.findViewById(R.id.details_layout); view.setTag(listViewHolder); } else { listViewHolder = (Holder) view.getTag(); }collapse(listViewHolder.details_layout); listViewHolder.coupon_code.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(!isexpand) { Log.d("texview onclick listner","true"); expand(listViewHolder.details_layout); }else { collapse(listViewHolder.details_layout); }/*if(listViewHolder.details_layout.getVisibility() == View.VISIBLE) listViewHolder.details_layout.setVisibility(View.GONE); else listViewHolder.details_layout.setVisibility(View.VISIBLE); */ } }); listViewHolder.coupon_code.setText(couponList.get(i)); return view; }

最后在适配器类中创建一个holder类