我想在单击警告对话框的“读取”按钮后突出显示单击的
ListView
项目;下面的代码可以完美工作,但是唯一的问题是,每当我单击该项目时,该对话框就会在对话框显示之前用颜色突出显示。
我怀疑我的代码缺失,请检查一下。谢谢
MainActivity.java
private boolean[] isSelected; //global variable
text_listview = findViewById(R.id.textlistview);
arrayAdapter = new ArrayAdapter(this,R.layout.list_item, list_items);
text_listview.setAdapter(arrayAdapter);
isSelected=new boolean[arrayAdapter.getCount()];
text_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
alert_dialog(position);
}
});
}
public void alert_dialog(final int position){
final SweetAlertDialog pDialog = new SweetAlertDialog(
text_message.this, SweetAlertDialog.WARNING_TYPE);
pDialog.setTitleText("Highlight data?");
pDialog.setContentText("Please choose the corresponding details");
pDialog.setCancelText("Unread!");
pDialog.setConfirmText("Read!");
pDialog.showCancelButton(true);
pDialog.show();
pDialog.setCancelable(false);
pDialog.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.setTitleText("Successfully save!")
.setContentText("Item mark as Unread")
.setConfirmText("OK")
.showCancelButton(false)
.setCancelClickListener(null)
.setConfirmClickListener(null)
.changeAlertType(SweetAlertDialog.SUCCESS_TYPE);
sDialog.setCanceledOnTouchOutside(false);
isSelected[position]=false;
text_listview.setItemChecked(position,false);
}
})
.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.setTitleText("Successfully save!")
.setContentText("Item mark as Read")
.setConfirmText("OK")
.showCancelButton(false)
.setCancelClickListener(null)
.setConfirmClickListener(null)
.changeAlertType(SweetAlertDialog.SUCCESS_TYPE);
sDialog.setCanceledOnTouchOutside(false);
isSelected[position]=true;
text_listview.setItemChecked(position,true);
}
})
.show();
}
layout activitymain.xml
<ListView
android:id="@+id/textlistview"
android:layout_width="match_parent"
android:choiceMode="multipleChoice"
android:layout_height="match_parent" />
drawable myselecter
<?xml version="1.0" encoding="utf-8" ?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:drawable="@color/lightOrange" android:state_activated="true"
/></selector>
代替使用selector
,您可以通过编程设置颜色来解决此问题。
因此,首先删除选择器xml文件,并删除其相关的布局属性。
使用以下方法将未读颜色添加到对话框setCancelClickListener1()
,将已读颜色添加到setConfirmClickListener
: view.setBackgroundColor(getResources()。getColor(R.color.light_orange));
view
是单击的ListView行的根;您可以从onItemClick
回调的参数中获取它。
因此,请更改alert_dialog()
方法的签名以接受视图:
text_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
alert_dialog(position, view); // <<<<<<<<<< here is the change
}
});
并且在对话框单击中添加调整颜色
public void alert_dialog(final int position, final View view){
final SweetAlertDialog pDialog = new SweetAlertDialog(
text_message.this, SweetAlertDialog.WARNING_TYPE);
pDialog.setTitleText("Highlight data?");
pDialog.setContentText("Please choose the corresponding details");
pDialog.setCancelText("Unread!");
pDialog.setConfirmText("Read!");
pDialog.showCancelButton(true);
pDialog.show();
pDialog.setCancelable(false);
pDialog.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.setTitleText("Successfully save!")
.setContentText("Item mark as Unread")
.setConfirmText("OK")
.showCancelButton(false)
.setCancelClickListener(null)
.setConfirmClickListener(null)
.changeAlertType(SweetAlertDialog.SUCCESS_TYPE);
sDialog.setCanceledOnTouchOutside(false);
isSelected[position]=false;
// text_listview.setItemChecked(position,false); // No need to this line
view.setBackgroundColor(getResources().getColor(android.R.color.transparent)); // Setting a transparent color for the unread item
}
})
.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
@Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.setTitleText("Successfully save!")
.setContentText("Item mark as Read")
.setConfirmText("OK")
.showCancelButton(false)
.setCancelClickListener(null)
.setConfirmClickListener(null)
.changeAlertType(SweetAlertDialog.SUCCESS_TYPE);
sDialog.setCanceledOnTouchOutside(false);
isSelected[position]=true;
// text_listview.setItemChecked(position,true); // No need to this
view.setBackgroundColor(getResources().getColor(R.color.light_orange)); // create light_orange color resource in colors.xml
}
})
.show();
}