java - 更改 ListView 的字体大小和文本大小

Question

在我的应用程序中，我有一个包含图像按钮和 TextView 的 ListView 。 我想根据用户的选择更改 ListView 的字体大小和字体大小。 我的 ListView 扩展自 ArrayAdapter。 这是我的代码:

public class ListAdapter extends ArrayAdapter<String> {
customButtonListener customListner;





public interface customButtonListener {
    public void onButtonClickListner(int position,String value);
}

public void setCustomButtonListner(customButtonListener listener) {
    this.customListner = listener;
}

private Context context;

private ArrayList<String> data = new ArrayList<String>();

public ListAdapter(Context context, ArrayList<String> dataItem) {
    super(context, R.layout.child_listview, dataItem);
    this.data = dataItem;
    this.context = context;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent)     {
    ViewHolder viewHolder;
    if (convertView == null) {
        LayoutInflater inflater = LayoutInflater.from(context);
        convertView = inflater.inflate(R.layout.child_listview, null);

        viewHolder = new ViewHolder();

        viewHolder.text = (TextView) convertView
                .findViewById(R.id.childTextView);

       // textView= (TextView) convertView.findViewById(R.id.childTextView);
      //  viewHolder.text = textView;
        viewHolder.Button = (ImageButton) convertView
                .findViewById(R.id.childButton);
        viewHolder.text.setTextColor(Color.BLUE);
        convertView.setTag(viewHolder);
    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }
    final String temp = getItem(position);
    viewHolder.text.setText(temp);
    viewHolder.Button.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            if (customListner != null) {
                customListner.onButtonClickListner(position,temp);
            }

        }
    });

    return convertView;
}

public class ViewHolder {
    TextView text;
    ImageButton Button;
}

和我的主要 Activity :

    public class MainActivity extends Activity implements
    customButtonListener {

private ListView listView;
public TextView textView;

ListAdapter adapter;
ArrayList<String> dataItems = new ArrayList<String>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //G.currentActivity = this;
    setContentView(R.layout.activity_main);
    String[] dataArray = getResources().getStringArray(R.array.listdata);
    List<String> dataTemp = Arrays.asList(dataArray);
    dataItems.addAll(dataTemp);
    listView = (ListView) findViewById(R.id.listView);


   // tx.setTypeface(G.defaultFont);
    adapter = new ListAdapter(MainActivity.this, dataItems);
    adapter.setCustomButtonListner(MainActivity.this);
    listView.setAdapter(adapter);


}

@Override
public void onButtonClickListner(int position, String value) {

    Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
    sharingIntent.setType("text/plain");
    String shareBody = dataItems.get(position);
    sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
    sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
    startActivity(Intent.createChooser(sharingIntent, "Share via"));
}

我该怎么做？有什么建议吗？

Answer 1

另请注意，如果在代码中设置了 textSize，则调用 textView.setTextSize(X) 会将数字 (X) 解释为 SP .使用 setTextSize(TypedValue.COMPLEX_UNIT_DIP, X) 在 dp 中设置值。