i have a list View in my app (this is the xml layout):
我在我的应用程序中有一个列表视图(这是xml布局):
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/arrayList"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:textFilterEnabled="true"
android:scrollbars="vertical"
android:drawSelectorOnTop="true">
</ListView>
Each item of my list View is composed of two TextView:
我的列表View中的每个项目都由两个TextView组成:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout android:layout_width="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/row_container"
android:padding="5px" android:layout_height="wrap_content"
android:background="@color/white" android:shrinkColumns="0">
<TableRow>
<TextView android:layout_height="wrap_content"
android:layout_width="wrap_content" android:layout_below="@+id/
description"
android:id="@+id/description"
android:textColor="@color/black"
android:scrollHorizontally="true"
android:singleLine="true"></TextView>
</TableRow>
<TableRow>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="@+id/result"
android:textColor="@color/grey"
android:maxLines="1"
android:scrollHorizontally="true"></TextView>
</TableRow>
</TableLayout>
I'm populating my listView from an ArrayAdapter, in this way:
我正在以这种方式从ArrayAdapter填充我的listView:
public class Matches extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//set layout
setContentView(R.layout.list_layout);
// obtain reference to listview
ListView listView = (ListView) findViewById(R.id.arrayList);
ArrayAdapter<Match> arrayAdapter = new ArrayAdapter<Match>(
this, R.layout.custom_row, R.id.description, createItems()) {
@Override
public View getView (int position, View convertView, ViewGroup parent){
Match item = getItem (position);
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.custom_row, null);
TextView description = (TextView)rowView.findViewById(R.id.description);
TextView result = (TextView)rowView.findViewById(R.id.result);
description.setText(item.description + " Risultato: " + item.result );
result.setText(item.date + " " + item.hour);
return rowView;
}
};
listView.setAdapter(arrayAdapter);
My goal is to be able to change the text color and the backgorund of these child views whenever the parent is selected or pressed.
我的目标是能够在选择或按下父级时更改这些子视图的文本颜色和backgorund。
How can i do it?
我该怎么做?
7 个解决方案
#1
37
The child views in your list row should be considered selected whenever the parent row is selected, so you should be able to just set a normal state drawable/color-list on the views you want to change, no messy Java code necessary. See this SO post.
每当选择父行时,应该考虑选择列表行中的子视图,因此您应该能够在要更改的视图上设置普通状态drawable / color-list,而不需要杂乱的Java代码。看到这篇SO帖子。
Specifically, you'd set the textColor
of your textViews to an XML resource like this one:
具体来说,您将textViews的textColor设置为XML资源,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="@color/black" /> <!-- focused -->
<item android:state_focused="true" android:state_pressed="true" android:drawable="@color/black" /> <!-- focused and pressed-->
<item android:state_pressed="true" android:drawable="@color/green" /> <!-- pressed -->
<item android:drawable="@color/black" /> <!-- default -->
</selector>
#2
31
In your main.xml include the following in your ListView:
在main.xml中,在ListView中包含以下内容:
android:drawSelectorOnTop="false"
android:listSelector="@android:color/darker_gray"
#3
5
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="true" android:drawable="@drawable/YOUR DRAWABLE XML" />
<item android:drawable="@drawable/YOUR DRAWABLE XML" />
</selector>
#4
4
Here's a good article on how to use selectors with lists.
这是一篇关于如何将选择器与列表一起使用的好文章。
Instead of setting it to be the android:background of the ListView, I believe you want to set android:listSelector as shown below:
而不是将它设置为ListView的android:background,我相信你想设置android:listSelector,如下所示:
<ListView android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:divider="@null"
android:dividerHeight="0dip"
android:listSelector="@drawable/list_selector" />
#5
1
listview.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(final AdapterView<?> parent, View view,
final int position, long id) {
// TODO Auto-generated method stub
parent.getChildAt(position).setBackgroundColor(getResources().getColor(R.color.listlongclick_selection));
return false;
}
});
#6
0
Very old but I have just struggled with this, this is how I solved it in pure xml. In res/values/colors.xml I added three colours (the colour_...);
很老,但我刚刚挣扎于此,这就是我在纯xml中解决它的方法。在res / values / colors.xml中我添加了三种颜色(颜色_...);
<resources>
<color name="black_overlay">#66000000</color>
<color name="colour_highlight_grey">#ff666666</color>
<color name="colour_dark_blue">#ff000066</color>
<color name="colour_dark_green">#ff006600</color>
</resources>
In the res/drawable folder I created listview_colours.xml which contained;
在res / drawable文件夹中我创建了包含的listview_colours.xml;
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/colour_highlight_grey" android:state_pressed="true"/>
<item android:drawable="@color/colour_dark_blue" android:state_selected="true"/>
<item android:drawable="@color/colour_dark_green" android:state_activated="true"/>
<item android:drawable="@color/colour_dark_blue" android:state_focused="true"/>
</selector>
In the main_activity.xml find the List View and add the drawable to listSelector;
在main_activity.xml中找到List View并将drawable添加到listSelector;
<ListView
android:id="@+id/menuList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:listSelector="@drawable/listview_colours"
android:background="#ff222222"/>
</LinearLayout>
Play with the state_... items in the listview_colours.xml to get the effect you want.
使用listview_colours.xml中的状态_...项目来获得所需的效果。
There is also a method where you can set the style of the List View but I never managed to get it to work
还有一种方法可以设置列表视图的样式,但我从未设法让它工作
#7
0
Declare list item components as final outside your setOnClickListener or whatever you want to apply on your list item like this:
将列表项组件声明为setOnClickListener之外的final或您要在列表项上应用的任何内容,如下所示:
final View yourView;
final TextView yourTextView;
And in overriding onClick or whatever method you use, just set colors as needed like this:
在覆盖onClick或您使用的任何方法时,只需根据需要设置颜色,如下所示:
yourView.setBackgroundColor(Color.WHITE/*or whatever RGB suites good contrast*/);
yourTextView.setTextColor(Color.BLACK/*or whatever RGB suites good contrast*/);
Or without the final declaration, if let's say you implement an onClick() for a custom adapter to populate a list, this is what I used in getView() for my setOnClickListener/onClick():
或者没有最后的声明,如果让我们说你为自定义适配器实现一个onClick()来填充列表,这就是我在setOnClickListener / onClick()的getView()中使用的:
//reset color for all list items in case any item was previously selected
for(int i = 0; i < parent.getChildCount(); i++)
{
parent.getChildAt(i).setBackgroundColor(Color.BLACK);
TextView text=(TextView) parent.getChildAt(i).findViewById(R.id.item);
text.setTextColor(Color.rgb(0,178,178));
}
//highlight currently selected item
parent.getChildAt(position).setBackgroundColor(Color.rgb(0,178,178));
TextView text=(TextView) parent.getChildAt(position).findViewById(R.id.item);
text.setTextColor(Color.rgb(0,178,178));
#1
37
The child views in your list row should be considered selected whenever the parent row is selected, so you should be able to just set a normal state drawable/color-list on the views you want to change, no messy Java code necessary. See this SO post.
每当选择父行时,应该考虑选择列表行中的子视图,因此您应该能够在要更改的视图上设置普通状态drawable / color-list,而不需要杂乱的Java代码。看到这篇SO帖子。
Specifically, you'd set the textColor
of your textViews to an XML resource like this one:
具体来说,您将textViews的textColor设置为XML资源,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="@color/black" /> <!-- focused -->
<item android:state_focused="true" android:state_pressed="true" android:drawable="@color/black" /> <!-- focused and pressed-->
<item android:state_pressed="true" android:drawable="@color/green" /> <!-- pressed -->
<item android:drawable="@color/black" /> <!-- default -->
</selector>
#2
31
In your main.xml include the following in your ListView:
在main.xml中,在ListView中包含以下内容:
android:drawSelectorOnTop="false"
android:listSelector="@android:color/darker_gray"
#3
5
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="true" android:drawable="@drawable/YOUR DRAWABLE XML" />
<item android:drawable="@drawable/YOUR DRAWABLE XML" />
</selector>
#4
4
Here's a good article on how to use selectors with lists.
这是一篇关于如何将选择器与列表一起使用的好文章。
Instead of setting it to be the android:background of the ListView, I believe you want to set android:listSelector as shown below:
而不是将它设置为ListView的android:background,我相信你想设置android:listSelector,如下所示:
<ListView android:id="@+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:divider="@null"
android:dividerHeight="0dip"
android:listSelector="@drawable/list_selector" />
#5
1
listview.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(final AdapterView<?> parent, View view,
final int position, long id) {
// TODO Auto-generated method stub
parent.getChildAt(position).setBackgroundColor(getResources().getColor(R.color.listlongclick_selection));
return false;
}
});
#6
0
Very old but I have just struggled with this, this is how I solved it in pure xml. In res/values/colors.xml I added three colours (the colour_...);
很老,但我刚刚挣扎于此,这就是我在纯xml中解决它的方法。在res / values / colors.xml中我添加了三种颜色(颜色_...);
<resources>
<color name="black_overlay">#66000000</color>
<color name="colour_highlight_grey">#ff666666</color>
<color name="colour_dark_blue">#ff000066</color>
<color name="colour_dark_green">#ff006600</color>
</resources>
In the res/drawable folder I created listview_colours.xml which contained;
在res / drawable文件夹中我创建了包含的listview_colours.xml;
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/colour_highlight_grey" android:state_pressed="true"/>
<item android:drawable="@color/colour_dark_blue" android:state_selected="true"/>
<item android:drawable="@color/colour_dark_green" android:state_activated="true"/>
<item android:drawable="@color/colour_dark_blue" android:state_focused="true"/>
</selector>
In the main_activity.xml find the List View and add the drawable to listSelector;
在main_activity.xml中找到List View并将drawable添加到listSelector;
<ListView
android:id="@+id/menuList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:listSelector="@drawable/listview_colours"
android:background="#ff222222"/>
</LinearLayout>
Play with the state_... items in the listview_colours.xml to get the effect you want.
使用listview_colours.xml中的状态_...项目来获得所需的效果。
There is also a method where you can set the style of the List View but I never managed to get it to work
还有一种方法可以设置列表视图的样式,但我从未设法让它工作
#7
0
Declare list item components as final outside your setOnClickListener or whatever you want to apply on your list item like this:
将列表项组件声明为setOnClickListener之外的final或您要在列表项上应用的任何内容,如下所示:
final View yourView;
final TextView yourTextView;
And in overriding onClick or whatever method you use, just set colors as needed like this:
在覆盖onClick或您使用的任何方法时,只需根据需要设置颜色,如下所示:
yourView.setBackgroundColor(Color.WHITE/*or whatever RGB suites good contrast*/);
yourTextView.setTextColor(Color.BLACK/*or whatever RGB suites good contrast*/);
Or without the final declaration, if let's say you implement an onClick() for a custom adapter to populate a list, this is what I used in getView() for my setOnClickListener/onClick():
或者没有最后的声明,如果让我们说你为自定义适配器实现一个onClick()来填充列表,这就是我在setOnClickListener / onClick()的getView()中使用的:
//reset color for all list items in case any item was previously selected
for(int i = 0; i < parent.getChildCount(); i++)
{
parent.getChildAt(i).setBackgroundColor(Color.BLACK);
TextView text=(TextView) parent.getChildAt(i).findViewById(R.id.item);
text.setTextColor(Color.rgb(0,178,178));
}
//highlight currently selected item
parent.getChildAt(position).setBackgroundColor(Color.rgb(0,178,178));
TextView text=(TextView) parent.getChildAt(position).findViewById(R.id.item);
text.setTextColor(Color.rgb(0,178,178));