问题
I have 2 XML file for list View. One for views and other for use first. note_list.XML is :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="10dip" >
<Button
android:id="@+id/allNotes_btn_refresh_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/all_note_refresh_list" />
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="match_parent" />
</LinearLayout>
and list_otem.XML is :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/list_lbl_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone" />
<TextView
android:id="@+id/list_lbl_subject"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/list_lbl_date"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
in below code, i set adapter for list:
ArrayList<HashMap<String, String>> noteList;
ListView lv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.note_list);
noteList = new ArrayList<HashMap<String, String>>();
lv = getListView();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String note_id = ((TextView) view
.findViewById(R.id.list_lbl_id)).getText().toString();
Intent i = new Intent(getApplicationContext(), NoteDetail.class);
i.putExtra("note_id", note_id);
startActivityForResult(i, 100);
}
});
}
public class LoadAllNotes extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(AllNotes.this);
pDialog.setMessage("???? ??? ????...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
noteList.clear();
}
protected String doInBackground(String... args) {
UserFunctions userFunctions = new UserFunctions();
jSon = userFunctions.getAllNotes(userId);
Log.i("AllNotes >> jSon >>", jSon.toString());
return null;
}
protected void onPostExecute(String file_url) {
pDialog.dismiss();
try {
if (jSon.has(KEY_SUCCESS)) {
String success = jSon.getString(KEY_SUCCESS);
if (success.equals("1")) {
notes = jSon.getJSONObject("notes");
for (int i = 0; i < notes.length(); i++) {
JSONObject c = notes.getJSONObject(Integer
.toString(i));
Log.i("JSONObject c >>", c.toString());
String id = c.getString(KEY_NOTE_ID);
String subject = c.getString(KEY_NOTE_SUBJECT);
String date = c.getString(KEY_NOTE_DATE);
HashMap<String, String> map = new HashMap<String, String>();
map.put(KEY_NOTE_ID, id);
map.put(KEY_NOTE_SUBJECT, subject);
map.put(KEY_NOTE_DATE, date);
noteList.add(map);
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
runOnUiThread(new Runnable() {
public void run() {
ListAdapter adapter = new SimpleAdapter(AllNotes.this,
noteList, R.layout.list_item, new String[] {
KEY_NOTE_ID, KEY_NOTE_SUBJECT,
KEY_NOTE_DATE }, new int[] {
R.id.list_lbl_id, R.id.list_lbl_subject,
R.id.list_lbl_date });
setListAdapter(adapter);
}
});
}
}
How can i set type face for TextViews in item_list.XML? I set note_list for content view in java code. so can't access to views of list_item.xml. thanks for helping me.
回答1:
You'll need to override the SimpleAdapter's getView(int position, View convertView, ViewGroup parent) method and cast the result to a TextView. That should be safe to do for the R.layout.list_item layout, although you may want to double check that.
From there, setting a typeface works as usual.
Snippet, to be placed inside an (anonymous) extension of SimpleAdapter:
Typeface mTypeface = ... // only needs to be initialised once.
@Override public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
TextView textview = (TextView) view;
textview.setTypeface(mTypeface);
return textview;
}
If, perhaps at some point in the future, you're going to have a more complex layout made out of more than just a single TextView, I'd consider implementing your own extension of ArrayAdapter. There are heaps of examples on how to go about that (also look up the ViewHolder/RowWrapper pattern) and it'll give you full control.
Edit: example code below.
public class TypefacedSimpleAdapter extends SimpleAdapter {
private final Typeface mTypeface;
public TypefacedSimpleAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to) {
super(context, data, resource, from, to);
mTypeface = Typeface.createFromAsset(context.getAssets(), /* typeface */);
}
@Override public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
TextView textview = (TextView) view;
textview.setTypeface(mTypeface);
return textview;
}
}
Copy-paste the class above and make sure to set up the type face field as per your requirements. Then replace the current SimpleAdapter; i.e. something like this:
ListAdapter adapter = new TypefacedSimpleAdapter(AllNotes.this,
noteList, R.layout.list_item, new String[] {
KEY_NOTE_ID, KEY_NOTE_SUBJECT,
KEY_NOTE_DATE }, new int[] {
R.id.list_lbl_id, R.id.list_lbl_subject,
R.id.list_lbl_date }
);
Note that I didn't actually compile or run any of this. I'll leave it up to you to fill in any gaps and/or make corrections.
回答2:
I add this below class :
public class myAdapter extends SimpleAdapter {
public myAdapter(Context context, List<HashMap<String, String>> items,
int resource, String[] from, int[] to) {
super(context, items, resource, from, to);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
Typeface typeFace = Typeface.createFromAsset(getAssets(),
"fontsfolder/B Yekan.ttf");
TextView lbl_subject = ((TextView) view
.findViewById(R.id.list_lbl_subject));
TextView lbl_date = ((TextView) view
.findViewById(R.id.list_lbl_date));
lbl_date.setTypeface(typeFace);
lbl_subject.setTypeface(typeFace);
return view;
}
}
And change code when fill list by this :
myAdapter adapter = new myAdapter(AllNotes.this, noteList,
R.layout.list_item, new String[] { KEY_NOTE_ID,
KEY_NOTE_SUBJECT, KEY_NOTE_DATE },
new int[] { R.id.list_lbl_id,
R.id.list_lbl_subject, R.id.list_lbl_date });
setListAdapter(adapter);
Thanks to @MH. for help
来源：https://stackoverflow.com/questions/13403605/set-typeface-for-listview