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[英]How to add ImageView, TextView and Button in ListView in android
[英]How to add ImageView's that are depending on the text of the TextView in a ListView
我有一個自定義ListView
與RowItem
包含TextView
和ImageView
。 RowItems
將動態添加。
我只想知道如何將ImageView
添加到TextView
的特定文本。
因此,如果在TextView
顯示“Title1”,則應將ImageView
“R.drawable.ic_title1”添加到RowItem
。
這是我的代碼
class SessionItemAdapter extends ArrayAdapter<Map> {
final ArrayList<Map> values;
Context context;
SessionItemAdapter(Context context, ArrayList<Map> values) {
super(context, R.layout.session_list_layout_row, values);
this.values = values;
this.context = context;
}
@Override
public View getView(final int position, View view, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.session_list_layout_row, parent, false);
TextView tv = (TextView) rowView.findViewById(R.id.stepTime);
final int rowId = (Integer) values.get(position).get("id");
int beepStringId = getResources().getIdentifier("exercise_typ_" + values.get(position).get("type"), "string", getPackageName());
rowView.setTag(rowId);
tv.setText(getResources().getString(beepStringId));
ImageView image =(ImageView) rowView.findViewById(R.id.imageView2);
switch(position){
case 1 : image.setImageResource(R.drawable.ic_title1);
break;
case 2 : image.setImageResource(R.drawable.ic_title2);
break;
}
ImageButton deleteSession = (ImageButton) rowView.findViewById(R.id.session_item_del);
deleteSession.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
/*if (!startStopToggle.isChecked()) {*/
sessionAdapter.remove(values.get(position));
sessionAdapter.notifyDataSetChanged();
}
});
return rowView;
}
//in your adapter getAllPlayers() would be something like this
public List<String> getAllPlayers() {
List<String> list = new ArrayList<String>();
for (Map item : values) {
int beepStringId = context.getResources().getIdentifier("exercise_typ_"
+ item.get("type"), "string", context.getPackageName());
String str = context.getResources().getString(beepStringId);
list.add(str);
}
return list;
}
}
我嘗試使用帶有position
的Switch
語句,但只將ImageView
設置為RowItem
,該RowItem
位於case
寫入的位置。
您可以根據TextView
的文本制作一個switch-case
語句,如下所示
switch(tv.getText().toString()){
case "Title1" : image.setImageResource(R.drawable.ic_title1);
break;
case "Title2" : image.setImageResource(R.drawable.ic_title2);
break;
default:
//Default image here, if no case found
break;
}
注意:以上答案要求遵守JRE 1.7
這樣的事情呢。
image.setImageResource(getImageId(this, "ic_" + tv.getText().toString().toLowerCase());
所以基本上你從文本視圖中獲取標題來操作它,使其處於存儲圖像的格式,並調用下面的幫助程序以獲得正確的圖像ID。
public static int getImageId(Context context, String imageName) {
return context.getResources().getIdentifier("drawable/" + imageName, null, context.getPackageName());
}
此實例中的解決方案是添加用於獲取和設置ListView
對象的各個字段的方法。 例如,由於您的行項中有TextView
和ImageView
,我們假設您的行對象如下所示:
public class ListObject
{
public ListObject (String textView, String imageView)
{
super();
this.textView = textView;
this.imageView = imageView;
}
private String textView;
private String imageView;
public String getTextView ()
{
return textView;
}
public void setTextView (String pTextView)
{
this.textView = pTextView;
}
public String getImageView ()
{
return imageView;
}
public void setImageView (String pImageView)
{
this.imageView = pImageView;
}
}
實現這些后,您可以根據TextView
輕松設置ImageView
,如下所示:
// As an example, let us use the first list item
ListObject listObject = (ListObject) parent.getItemAtPosition(0);
if (listObject.getTextView == "Title1")
{
listObject.setImageView("NameOfResource");
}
// so on and so forth
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