如何在Android中向GridView添加TextView

Question

我已经知道如何在Android中向GridView添加字符串，但我想添加TextView以格式化文本（对齐方式、颜色等）。这是我的当前代码：

GridView gridView = (GridView) findViewById(R.id.grades);
    ArrayList<TextView> display = new ArrayList<TextView>();
    ArrayAdapter<TextView> adapter = new ArrayAdapter<TextView>(this,
            android.R.layout.simple_list_item_1, display);

    gridView.setAdapter(adapter);
    for(int i = 0; i<currentClass.grades.size(); i++)
    {
        TextView name = new TextView(this);
        TextView weight = new TextView(this);
        TextView cur_points = new TextView(this);
        TextView total_points = new TextView(this);
        TextView cur_percent = new TextView(this);

        name.setText(currentClass.grades.get(i).name);
        weight.setText(currentClass.grades.get(i).weight);
        cur_points.setText(currentClass.grades.get(i).cur_points);
        total_points.setText(currentClass.grades.get(i).total_points);
        cur_percent.setText(currentClass.grades.get(i).cur_percent);

        name.setTextColor(Color.WHITE);
        weight.setTextColor(Color.WHITE);
        cur_points.setTextColor(Color.WHITE);
        total_points.setTextColor(Color.WHITE);
        cur_percent.setTextColor(Color.WHITE);

        name.setSingleLine(true);
        weight.setSingleLine(true);
        cur_points.setSingleLine(true);
        total_points.setSingleLine(true);
        cur_percent.setSingleLine(true);

        name.setGravity(Gravity.LEFT);
        weight.setGravity(Gravity.RIGHT);
        cur_points.setGravity(Gravity.RIGHT);
        total_points.setGravity(Gravity.RIGHT);
        cur_percent.setGravity(Gravity.RIGHT);

        display.add(name);
        display.add(weight);
        display.add(cur_points);
        display.add(total_points);
        display.add(cur_percent);

        adapter.notifyDataSetChanged();
    }

不幸的是，当我运行它时，网格视图只给出每个TextView的信息： “android.id.widget.TextView（{42f20a88等}。”

我该如何将TextView添加到GridView中？

- Joe Smith

---

你最好创建一个自定义适配器。我认为你的版本不起作用是因为ArrayAdapter和你使用的参数。 - Tadej

Answer 1

试着用类似这样的方式

gridview.xml

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/gridView1"
    android:numColumns="auto_fit"
    android:gravity="center"
    android:columnWidth="100dp"
    android:stretchMode="columnWidth"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

</GridView>

item.xml

<TextView
    android:id="@+id/grid_item_label"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@+id/label"
    android:layout_marginTop="5px"
    android:textSize="15px" >
</TextView>

自定义textView的适配器类

public class TextViewAdapter extends BaseAdapter {
        private Context context;
        private final String[] textViewValues;

        public TextViewAdapter(Context context, String[] textViewValues) {
            this.context = context;
            this.textViewValues = textViewValues;
        }

        public View getView(int position, View convertView, ViewGroup parent) {

            LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            View gridView;

            if (convertView == null) {

                gridView = new View(context);

                // get layout from mobile.xml
                gridView = inflater.inflate(R.layout.item, null);

                // set value into textview
                TextView textView = (TextView) gridView
                        .findViewById(R.id.grid_item_label);
                textView.setText(textViewValues[position]);  
            } else {
                gridView = (View) convertView;
            }

            return gridView;
        }

        @Override
        public int getCount() {
            return textViewValues.length;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return 0;
        }

    }

最后，在主类中设置适配器。

gridView.setAdapter(new TextViewAdapter(this, YOUR_ARRAY_WITH_TEXT_FOR_TEXTVIEWS));

还要注意，您可以将任何其他值（如文本颜色）作为构造函数中的另一个参数传递，然后在适配器中设置它们，例如...

textView.setColor(textViewColors[position]); 

对于所有TextView共有的属性，您只需要更改item.xml即可 :) 希望这能帮到您....

- Matej Špilár

Answer 2

只需执行 name.getText() 即可完成！

- Faiq