我想从列表视图中获取图像。但问题是无论我创建的列表视图是不可点击的。我也尝试使用onItemclick监听器，但由于listview不可用，因此无法正常工作。似乎listview根本没有可点击的..下面给出了适用于listview的适配器。
// GridView的适配器，包含检测到的面部的详细信息。
private class FaceListAdapter extends BaseAdapter {
//List<FaceRectangle> ffRect;
// The detected faces.
List<Face> faces;
List<UUID> faceIdList;
List<IdentifyResult> mIdentifyResults;
// The thumbnails of detected faces.
List<Bitmap> faceThumbnails;
// Initialize with detection result.
FaceListAdapter(Face[] detectionResult) {
//ffRect=new ArrayList<>();
faceIdList = new ArrayList<>();
faces = new ArrayList<>();
faceThumbnails = new ArrayList<>();
mIdentifyResults = new ArrayList<>();
if (detectionResult != null) {
faces = Arrays.asList(detectionResult);
for (Face face: faces) {
try {
// Crop face thumbnail with five main landmarks drawn from original image.
faceThumbnails.add(ImageHelper.generateFaceThumbnail(mBitmap, face.faceRectangle));
faceRect=face.faceRectangle;
//ffRect.add(faceRect);
faceIdList.add(null);
} catch (IOException e) {
// Show the exception when generating face thumbnail fails.
//setInfo(e.getMessage());
}
}
}
}
public void setIdentificationResult(IdentifyResult[] identifyResults) {
mIdentifyResults = Arrays.asList(identifyResults);
}
@Override
public boolean isEnabled(int position) {
return false;
}
@Override
public int getCount() {
return faces.size();
}
@Override
public Object getItem(int position) {
return faces.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.item_face_with_description, parent, false);
}
convertView.setId(position);
// Show the face thumbnail.
((ImageView)convertView.findViewById(R.id.face_thumbnail)).setImageBitmap(faceThumbnails.get(position));
if (mIdentifyResults.size() == faces.size()) {
// Show the face details.
DecimalFormat formatter = new DecimalFormat("#0.00");
if (mIdentifyResults.get(position).candidates.size() > 0) {
String personId = mIdentifyResults.get(position).candidates.get(0).personId.toString();
String personName = StorageHelper.getPersonName(personId, "person", Face_detection.this);
String identity = "Person: " + personName + "\n" + "Confidence: " + formatter.format(mIdentifyResults.get(position).candidates.get(0).confidence);
((TextView) convertView.findViewById(R.id.text_detected_face)).setText(identity);
photoAdd.setEnabled(false);
} else {
((TextView) convertView.findViewById(R.id.text_detected_face)).setText(
R.string.face_cannot_be_identified);
photoAdd.setEnabled(true);
// btmp.add(faceThumbnails.get(position));
//fRect.add(ffRect.get(position));
}
}
return convertView;
}
}
> item_face_with_description.xml
<!-- Copyright (c) Microsoft. All rights reserved. -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/face_thumbnail"
android:layout_width="80dp"
android:layout_height="80dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="5dp"
android:layout_marginStart="5dp"
android:id="@+id/text_detected_face" />
</LinearLayout>
包含ListView的Xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_face_detection"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="myapptest.techm.com.myapptest.Face_detection">
<include
android:id="@+id/tool_bar"
layout="@layout/tacho_toolbar"></include>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/tool_bar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="Take Again"
android:layout_height="wrap_content"
android:layout_marginTop="22dp"
android:id="@+id/takePhoto"
android:layout_below="@+id/camerapreview"
android:layout_centerHorizontal="true"
android:layout_width="150dp"
android:onClick="clickPhoto (Face_detection)"
android:visibility="gone" />
<TextView
android:text="Faces in Image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textView23"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
android:layout_below="@+id/takePhoto"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="42dp" />
<ListView
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_below="@+id/textView23"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="28dp"
android:id="@+id/face_detect_list"
android:focusable="false" />
<Button
android:text="Add"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="25dp"
android:layout_marginStart="25dp"
android:layout_marginBottom="103dp"
android:id="@+id/photoAdd" />
<Button
android:text="Cancle"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/photoAdd"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="66dp"
android:layout_marginEnd="66dp"
android:id="@+id/cancle" />
<SurfaceView
android:id="@+id/camerapreview"
android:layout_width="350dp"
android:layout_height="400dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp" />
<Button
android:text="Identify"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/cancle"
android:layout_alignRight="@+id/takePhoto"
android:layout_alignEnd="@+id/takePhoto"
android:layout_marginRight="18dp"
android:layout_marginEnd="18dp"
android:id="@+id/identify"
android:visibility="gone" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
答案 0 :(得分：1)
适配器上的isEnabled方法负责ListView忽略点击。
@Override
public boolean isEnabled(int position)
{
return false;
}
您的适配器会覆盖isEnabled并返回false所有位置，表示列表中的每个项目都已被禁用。 已禁用的视图不会收到输入事件。
如果可以禁用列表中的项目，那么您的自定义适配器需要以某种方式跟踪这些项目（例如列表），否则您应该为所有位置返回true。