Question

我已经附加了一个xml文件，以修改创建自定义ArrayAdapter类的列表视图中显示的对象的样式。现在，我想设置一个侦听器，告诉我用户选择了哪个项目。它不仅给出错误消息，而且不执行该方法内的任何代码。我尝试回到没有自定义适配器的简单listView（使用默认适配器之一），并且它可以正常工作。我已经在这里查找并搜索了错误消息，这似乎是与SELinux权限有关的问题，但是我也没有更改任何这些内容，因为我不知道该怎么做。

这是错误消息：

W / RenderThread：类型= 1400审核（0.0：5784638）：AVC：拒绝{读取}名称=“ u：object_r：vendor_default_prop：s0” dev =“ tmpfs” ino = 21556 scontext = u：r：untrusted_app ：s0：c164，c256，c512，c768 tcontext = u：object_r：vendor_default_prop：s0 tclass =文件许可= 0

这是适配器：

public class CustomAdapter extends ArrayAdapter<Schedule> {

public CustomAdapter(Context context, ArrayList<Schedule> items) {
    super(context, R.layout.custom_row, items);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    LayoutInflater myInflater = LayoutInflater.from(getContext());

    View customView = myInflater.inflate(R.layout.custom_row, parent, false);

    Schedule item = getItem(position);

    TextView scheduleName = customView.findViewById(R.id.customRow_scheduleName);
    TextView scheduleStart = customView.findViewById(R.id.customRow_startDate);
    TextView scheduleEnd = customView.findViewById(R.id.customRow_endDate);

    scheduleName.setText(item.getName());
    scheduleStart.setText(item.getStartDate());
    scheduleEnd.setText(item.getEndDate());

    return customView;
}}

这是包含listView的主要类

public class MainActivity extends AppCompatActivity implements CreateNewScheduleFragment.OnInputListener {

private ArrayList<Schedule> scheduleCollection;

private ListAdapter customAdapter;

ListView scheduleListView;
Button newScheduleBtn;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    newScheduleBtn = findViewById(R.id.addNewSchedule);

    scheduleCollection = new ArrayList<>();

    //String[] array = {"pippo", "pluto"};

    customAdapter = new CustomAdapter(this, scheduleCollection);
    scheduleListView = findViewById(R.id.scheduleListView);
    scheduleListView.setAdapter(customAdapter);//new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, array));

    // #################### DEBUG
    scheduleCollection.add(new Schedule("Scheda 1", "14-3", "21-04", "ciao"));
    scheduleCollection.add(new Schedule("Scheda 2", "22-05", "5-06", "ciao"));
    ((ArrayAdapter<Schedule>)customAdapter).notifyDataSetChanged();
    // #################### DEBUG

    scheduleListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Log.i("info", "I'm item in position " + String.valueOf(position));
        }
    });}

这是布局文件

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="120dp"
    android:background="@drawable/fragment_rounded_corners"
    android:padding="8dp"
    android:layout_margin="10dp">

    <TextView
        android:id="@+id/customRow_scheduleName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="8dp"
        android:layout_marginTop="0dp"
        android:maxWidth="200dp"
        android:text="Scheda 1"
        android:textColor="@color/colorTextIcons"
        android:textSize="35dp" />

    <TextView
        android:id="@+id/customRow_startDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginEnd="20dp"
        android:layout_toStartOf="@+id/customRow_endDate"
        android:text="14-03"
        android:textColor="@color/colorTextIcons"
        android:textSize="20dp" />

    <TextView
        android:id="@+id/customRow_endDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentBottom="true"
        android:text="21-05"
        android:textColor="@color/colorTextIcons"
        android:textSize="20dp" />

    <TextView
        android:id="@+id/textView8"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/customRow_startDate"
        android:layout_alignStart="@+id/customRow_startDate"
        android:layout_marginBottom="10dp"
        android:text="period:"
        android:textColor="@color/colorTextIcons" />

    <Button
        android:id="@+id/customRow_cancelBtn"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        android:background="@drawable/ic_cancel_black_24dp"/>

</RelativeLayout>

这是自定义对象类：

package com.example.fabri.gymine;

import android.util.Log;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class Schedule {

    private ArrayList<Workout> workouts;
    private String name;
    private String startDate, endDate, filePath;

    public Schedule(String name, String startDate, String endDate, String filePath) {
        this.name = name;
        this.startDate = startDate;
        this.endDate = endDate;
        this.filePath = filePath;
        workouts = new ArrayList<>();

        //loadScheduleFromFile();
    }

    public void removeWorkout(Workout w){
        workouts.remove(w);
    }

    public int workoutCount(){
        return workouts.size();
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public String getStartDate() {
        return startDate;
    }

    public String getEndDate() {
        return endDate;
    }

    private String myReadLine(BufferedReader br) throws IOException{
        String tmp = br.readLine();
        Log.i("Letto", tmp);
        return tmp;
    }
}

Answer 1

[array([12, 15]), array([ 3,  7, 18, 18]), array([ 9, 16]), array([15, 19])]

也可以使用

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    // Check if an existing view is being reused, otherwise inflate the view
    View listItemView = convertView;
    if (listItemView == null) {
        listItemView = LayoutInflater.from(getContext()).inflate(
                R.layout.custom_row, parent, false);
    }
}

之后

   scheduleListView.setAdapter(customAdapter);

使用setOnItemClickListener时，带有自定义ArrayAdapter错误的Android ListView

1 个答案: