android自定义适配器动态行高
我刚刚创建了我的第一个自定义适配器,它工作得非常好。 然后,我创建了一个rowlayout.xml供适配器填充 但是我有一个问题,行不是动态的,所以如果我尝试放入一个比行长的文本,行不会展开,而是将文本切掉。(见下图:) 以下是我的行布局:android自定义适配器动态行高,android,listview,custom-adapter,row-height,Android,Listview,Custom Adapter,Row Height,我刚刚创建了我的第一个自定义适配器,它工作得非常好。 然后,我创建了一个rowlayout.xml供适配器填充 但是我有一个问题,行不是动态的,所以如果我尝试放入一个比行长的文本,行不会展开,而是将文本切掉。(见下图:) 以下是我的行布局: <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:padding="6dip" >
<!--The second line is used for the date of the post-->
<TextView
android:id="@+id/secondLine"
android:layout_width="fill_parent"
android:layout_height="26dip"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:ellipsize="marquee"
android:singleLine="true"
android:text="Time and date"
android:textSize="12sp" />
<!--The first line is used to the post-->
<TextView
android:id="@+id/firstLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_above="@id/secondLine"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_alignWithParentIfMissing="true"
android:gravity="center_vertical"
android:text="Post"
android:textSize="16sp" />
</RelativeLayout>
这是我的适配器:
public class MyAdapter extends ArrayAdapter<UserPost> {
private final Context context;
private final List<UserPost> posts;
public MyAdapter(Context context, List<UserPost> posts) {
super(context, R.layout.rowlayout, posts);
this.context = context;
this.posts = posts;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.rowlayout, parent, false);
TextView firstText = (TextView) rowView.findViewById(R.id.firstLine);
TextView secondText = (TextView) rowView.findViewById(R.id.secondLine);
//Insert the post
firstText.setText(posts.get(position).getMessage());
//Insert the time
secondText.setText(posts.get(position).getDate());
return rowView;
}
}
公共类MyAdapter扩展了ArrayAdapter{
私人最终语境;
私人最终名单员额;
公共MyAdapter(上下文、列表帖子){
super(上下文、R.layout.rowlayout、posts);
this.context=上下文;
这个.posts=posts;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
LayoutFlater充气器=(LayoutFlater)上下文
.getSystemService(上下文布局\充气机\服务);
视图行视图=充气机。充气(R.layout.rowlayout,父级,false);
TextView firstText=(TextView)rowView.findViewById(R.id.firstLine);
TextView secondText=(TextView)rowView.findViewById(R.id.secondLine);
//插入柱子
setText(posts.get(position.getMessage());
//插入时间
secondText.setText(posts.get(position.getDate());
返回行视图;
}
}
有人知道如何解决这个问题吗
谢谢
更新(解决方案):
好的,所以我在rowlayout.xml中做了一些更改,最后我终于想出了这个,很有效
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="6dip" >
<!--The first line is used to the post-->
<TextView
android:id="@+id/firstLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_alignWithParentIfMissing="true"
android:gravity="center_vertical"
android:text="Post"
android:textSize="16sp" />
<!--The second line is used for the date of the post-->
<TextView
android:id="@+id/secondLine"
android:layout_below="@+id/firstLine"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:ellipsize="marquee"
android:singleLine="false"
android:text="Time and date"
android:textSize="12sp" />
</RelativeLayout>
您只需删除singleLine属性即可
android:singleLine="false"
或者你可以这样做
public class MyAdapter extends ArrayAdapter<UserPost> {
private final Context context;
private final List<UserPost> posts;
public MyAdapter(Context context, List<UserPost> posts) {
super(context, R.layout.rowlayout, posts);
this.context = context;
this.posts = posts;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(text.length>MAX_LENGTH){
View rowView = inflater.inflate(R.layout.rowlayout1, parent, false);
//....
}else{
View rowView = inflater.inflate(R.layout.rowlayout, parent, false);
TextView firstText = (TextView) rowView.findViewById(R.id.firstLine);
TextView secondText = (TextView) rowView.findViewById(R.id.secondLine);
//Insert the post
firstText.setText(posts.get(position).getMessage());
//Insert the time
secondText.setText(posts.get(position).getDate());
}
return rowView;
}
}
公共类MyAdapter扩展了ArrayAdapter{
私人最终语境;
私人最终名单员额;
公共MyAdapter(上下文、列表帖子){
super(上下文、R.layout.rowlayout、posts);
this.context=上下文;
这个.posts=posts;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
LayoutFlater充气器=(LayoutFlater)上下文
.getSystemService(上下文布局\充气机\服务);
如果(文本长度>最大长度){
视图行视图=充气机。充气(R.layout.rowlayout1,父级,false);
//....
}否则{
视图行视图=充气机。充气(R.layout.rowlayout,父级,false);
TextView firstText=(TextView)rowView.findViewById(R.id.firstLine);
TextView secondText=(TextView)rowView.findViewById(R.id.secondLine);
//插入柱子
setText(posts.get(position.getMessage());
//插入时间
secondText.setText(posts.get(position.getDate());
}
返回行视图;
}
}
您只需删除singleLine属性即可
android:singleLine="false"
或者你可以这样做
public class MyAdapter extends ArrayAdapter<UserPost> {
private final Context context;
private final List<UserPost> posts;
public MyAdapter(Context context, List<UserPost> posts) {
super(context, R.layout.rowlayout, posts);
this.context = context;
this.posts = posts;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(text.length>MAX_LENGTH){
View rowView = inflater.inflate(R.layout.rowlayout1, parent, false);
//....
}else{
View rowView = inflater.inflate(R.layout.rowlayout, parent, false);
TextView firstText = (TextView) rowView.findViewById(R.id.firstLine);
TextView secondText = (TextView) rowView.findViewById(R.id.secondLine);
//Insert the post
firstText.setText(posts.get(position).getMessage());
//Insert the time
secondText.setText(posts.get(position).getDate());
}
return rowView;
}
}
公共类MyAdapter扩展了ArrayAdapter{
私人最终语境;
私人最终名单员额;
公共MyAdapter(上下文、列表帖子){
super(上下文、R.layout.rowlayout、posts);
this.context=上下文;
这个.posts=posts;
}
@凌驾
公共视图getView(int位置、视图转换视图、视图组父视图){
LayoutFlater充气器=(LayoutFlater)上下文
.getSystemService(上下文布局\充气机\服务);
如果(文本长度>最大长度){
视图行视图=充气机。充气(R.layout.rowlayout1,父级,false);
//....
}否则{
视图行视图=充气机。充气(R.layout.rowlayout,父级,false);
TextView firstText=(TextView)rowView.findViewById(R.id.firstLine);
TextView secondText=(TextView)rowView.findViewById(R.id.secondLine);
//插入柱子
setText(posts.get(position.getMessage());
//插入时间
secondText.setText(posts.get(position.getDate());
}
返回行视图;
}
}
在您的项目布局上
您有android:layout\u height=“?android:attr/listpresprereditemheight”
意味着您将强制所有行的特定行高更改为android:layou height=“wrap\u content”
在项目布局上
您有android:layout\u height=“?android:attr/listPreferredItemHeight”
表示您正在强制将所有行的特定行高更改为android:layout\u height=“wrap\u content”