[英]ListView OnItemClickListener is not always firing
似乎我的ListView OnItemClickListener似乎並不總是被調用。 ListView使用嵌入式TextViews。
如果單擊每個項目的頂部或底部3px,則監聽器會觸發。
如果單擊TextView的文本,則監聽器不會像消耗/阻止單擊那樣觸發。
我已經嘗試了將focusable="false"
, clickable="false"
和focusableInTouchMode="false"
添加到TextView並將android:descendantFocusability="beforeDescendants"
到根視圖的許多組合。
activity_local_explorer.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:descendantFocusability="beforeDescendants"
tools:context="my.package.FileBrowser">
<ListView
android:id="@+id/local_file_view"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:clickable="true" />
<TextView
android:id="@+id/local_file_view_text"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:clickable="false"
android:focusable="false"
android:focusableInTouchMode="false"
android:textSize="25sp"/>
</android.support.constraint.ConstraintLayout>
活動
public class LocalExplorer extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_local_explorer);
String[] values = { "Hello", "My", "Friend"};
ListView listView = (ListView) findViewById(R.id.local_file_view);
listView.setAdapter(new ArrayAdapter<>(this, R.layout.activity_local_explorer, R.id.local_file_view_text, values));
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String selectedValue = getItemAtPosition(position);
Snackbar.make(listView, selectedValue, 2).show();
}
});
}
由於我一直在這個簡單的活動上花費數小時,因此將不勝感激!
首先,我要感謝那些試圖幫助我回答我的問題的人,感謝您的寶貴時間。
好吧,我終於通過稍微改變方法來完成了這項工作。 我將TextView從activity_local_explorer.xml
移出到其自己的xml布局文件中,並在創建適配器時使用了其他構造函數。
activity_local_explorer.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:descendantFocusability="blocksDescendants"
tools:context="my.package.FileBrowser">
<ListView
android:id="@+id/local_file_view"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_constraintBottom_creator="1"
tools:layout_constraintLeft_creator="1"
tools:layout_constraintRight_creator="1"
tools:layout_constraintTop_creator="1" />
</android.support.constraint.ConstraintLayout>
local_explorer_row.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rowTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="16sp" >
</TextView>
活動
public class LocalExplorer extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_local_explorer);
String[] values = { "Hello", "My", "Friend"};
ListView listView = (ListView) findViewById(R.id.local_file_view);
listView.setAdapter(new ArrayAdapter<>(this, R.layout.local_explorer_row, values));
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String selectedValue = getItemAtPosition(position);
Snackbar.make(listView, selectedValue, 2).show();
}
});
}
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