我已经为 Android 创建了一个学习助手应用程序。我使用一个自定义数组适配器，它在每一行中都有一个复选框和一个 TextView 。我的一些 ListView 是使用此自定义适配器填充的。我的 ListView 用于导航到其他 Activity ，并具有 onItemClick 监听器。
在 android studio 模拟器上，一切正常。但是，我导出了 apk 并将其安装在我的手机上，使用我的自定义适配器的 ListView 在点击时不再执行任何操作。
这是我的自定义适配器:
public class CheckboxAdapter extends BaseAdapter {
private Context context;
ArrayList<String[]> list = new ArrayList<>();
Boolean completed[];
public CheckboxAdapter(ArrayList<String[]> list,Context context) {
super();
this.context = context;
this.list = list;
completed = new Boolean[list.size()];
for (int i = 0; i < completed.length; i++){
if(list.get(i)[1].equalsIgnoreCase("true")){
completed[i] = true;
} else {
completed[i] = false;
}
}
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
// Class to temporarily store the textview and checkbox in each row
public class ViewHolder {
public TextView nametext;
public CheckBox tick;
}
// Override getView method to set custom row layout
// Use viewHolder to get the textview and checkbox then inflate it
// Set text to passed in list of string data
// Set checkbox to passed in array of booleans, then disable the checkbox
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder view = null;
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
if (view == null) {
view = new ViewHolder();
convertView = inflater.inflate( R.layout.checkbox_adapter, null);
view.nametext = (TextView) convertView.findViewById(R.id.adaptertextview);
view.tick = (CheckBox)convertView.findViewById(R.id.adaptercheckbox);
convertView.setTag(view);
} else {
view = (ViewHolder) convertView.getTag();
}
view.tick.setTag(position);
view.nametext.setText(list.get(position)[0]);
view.tick.setChecked(completed[position]);
view.tick.setEnabled(false);
return convertView;
}
}
及其 XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent">
<CheckBox
android:id="@+id/adaptercheckbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/adaptertextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
这是一个使用自定义适配器及其 onclick 函数的 ListView 示例:
ArrayList<String[]> content = new ArrayList<String[]>();
content.add(new String[] {"Lesson 1 Highest Mark: " + highest[0], completed[0]});
content.add(new String[] {"Lesson 2 Highest Mark: " + highest[1], completed[1]});
content.add(new String[] {"Lesson 3 Highest Mark: " + highest[2], completed[2]});
content.add(new String[] {"Lesson 4 Highest Mark: " + highest[3], completed[3]});
content.add(new String[] {"Lesson 5 Highest Mark: " + highest[4], completed[4]});
content.add(new String[] {"Combined Quiz", "false"});
ListView quizList = (ListView) findViewById(R.id.quizListView);
CheckboxAdapter adapter = new CheckboxAdapter(content, this);
quizList.setAdapter(adapter);
quizList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
System.out.println(parent. getItemAtPosition(position));
switch (position) {
case 0: Intent i0 = new Intent(Quiz.this, Quiz1.class);
startActivity(i0);
break;
case 1: Intent i1 = new Intent(Quiz.this, Quiz2.class);
startActivity(i1);
break;
case 2: Intent i2 = new Intent(Quiz.this, Quiz3.class);
startActivity(i2);
break;
case 3: Intent i3 = new Intent(Quiz.this, Quiz4.class);
startActivity(i3);
break;
case 4: Intent i4 = new Intent(Quiz.this, Quiz5.class);
startActivity(i4);
break;
case 5: Intent i5 = new Intent(Quiz.this, QuizCombined.class);
startActivity(i5);
break;
default: return;
}
}
});
知道为什么这只适用于 android studio 模拟器吗？我试过两台设备和 Memu 模拟器，但它们都不起作用，只有 android studio 模拟器。
编辑:使用上述 ListView 的 Activity 的 xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<android.support.constraint.ConstraintLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Quiz">
<TextView
android:id="@+id/quizTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="56dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/quizTextView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/quizTextView" />
<ListView
android:id="@+id/quizListView"
android:layout_width="368dp"
android:layout_height="493dp"
android:layout_marginLeft="10dp"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/quizTextView2" />
</android.support.constraint.ConstraintLayout>
<include
layout="@layout/app_bar_main_menu"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main_menu"
app:menu="@menu/activity_main_menu_drawer" />
</android.support.v4.widget.DrawerLayout>
编辑:我将该项目复制到我的笔记本电脑并在那里的模拟器中运行它，但没有成功。似乎它只适用于我的电脑
最佳答案
删除重复的
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"
来自 android.support.constraint.ConstraintLayout。
很可能透明布局重叠并阻止点击...
inspect view boundaries 按钮在图 block 中被删除；
认为它也可以在开发者设置中使用。
关于ListView中的Android自定义ArrayAdapter，ListView onClick适用于模拟器但不适用于手机，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52959732/