在ListView中将多个不同的字体设置为TextView

我有一个ListView，显示TextViews列表。 我希望每个TextView以适当的字体显示。 作为字体String []数组的一部分出现在ListView中的字体名称拼写与创建字体时的字体相同。

ListView fontsListView = (ListView) this.view.findViewById(R.id.MenuLayout); final String[] fonts = new String[] { "Aclonica", "Amino-Regular", }; ArrayList fontsList = new ArrayList(); fontsList.addAll( Arrays.asList(fonts) ); ArrayAdapter listAdapter = new ArrayAdapter(getActivity(), R.layout.fonts_simple_row, fontsList); final TextView[] textViewArray = new TextView[0]; for( int i = 0; i <= fonts.length - 1; i++) { textViewArray[i].setTypeface(Typeface.createFromAsset(getActivity().getAssets(), "fonts/" + fonts[i] + ".ttf")); } fontsListView.setAdapter(listAdapter); 

和XML：

为什么我不能让ListView中的每个TextView成为正确的Typface？

Answer 1

 ArrayAdapter listAdapter = new ArrayAdapter(getApplicationContext(),R.layout.fonts_simple_row,value) { @Override public View getView(int position, View convertView,ViewGroup parent) { View view = super.getView(position, convertView, parent); TextView textView = (TextView) view.findViewById(R.id.rowTextView); textView.setTypeface(Typeface.createFromAsset(getActivity().getAssets(),"fonts/" + fonts[position] + ".ttf")); return view; } }; fontsListView.setAdapter(arrayAdapter); 

Answer 2

您应该使用自定义数组适配器并在get view方法上设置字体。

  public class MySimpleArrayAdapter extends ArrayAdapter { private final Context context; private final String[] values; public MySimpleArrayAdapter(Context context, String[] values) { super(context, R.layout.rowlayout, values); this.context = context; this.values = values; } @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 textView = (TextView) rowView.findViewById(R.id.label); textView.setText(values[position]); String s = values[position]; if (s.equals("Arial")) { // set textView font to arial } else if (s.equals("Roboto")){ // set textView font to roboto } return rowView; } } 

Answer 3

仅创建一次字体并使用它。 避免在getview方法中创建字体。如果不保持可重用性，每次滚动时都会创建。

使用ViewHolder模式可以在listview中获得更好的性能

下面我试着给出两件事。 我也在评论中给出了解释。 请检查它是否对您有所帮助。

 public class AdapterFontViewHolder extends ArrayAdapter { private final Context context; private final String[] values; Typeface typefaceArial, typefaceRoboto; private Typeface[] fonts; public AdapterFontViewHolder(Context context, String[] values) { super(context, R.layout.rowlayout, values); this.context = context; this.values = values; // Create Typeface only once and use it.. Path you can change as per your directory fonts = new Typeface[]{ Typeface.createFromAsset(context.getAssets(), "fonts/Aclonica.ttf"), Typeface.createFromAsset(context.getAssets(), "fonts/Amino-Regular.ttf"), }; } public class ViewHolder { TextView textView; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder vHolder; if (convertView == null) { // Create Instnce of view if its null & store object in ViewHolder (a class) vHolder = new ViewHolder(); convertView = LayoutInflater.from(context).inflate(R.layout.rowlayout, parent, false); vHolder.textView = (TextView) convertView.findViewById(R.id.label); //Set ViewHolder instance in convertview in a tag as a object convertView.setTag(vHolder); } else { // reuse as already converview is instansiated & it holds ViewHolder instance in tag vHolder = (ViewHolder) convertView.getTag(); } vHolder.textView.setText(values[position]); //Here From Fonts array take Typeface vHolder.textView.setTypeface(fonts[position]); return convertView; } } 

设置适配器

 ListView fontsListView = (ListView) this.view.findViewById(R.id.MenuLayout); AdapterFontViewHolder listAdapter = new AdapterFontViewHolder(getActivity(), R.layout.fonts_simple_row, fontsList); fontsListView.setAdapter(listAdapter);