如何在Android中将TextView添加到GridView中 [英] How to add a TextView to a GridView in Android

问题描述

我已经知道如何将String添加到android的gridView中，但是我想添加textviews来格式化文本（重力，颜色等）。这是我目前的代码：

  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，gridview只是给了我每个TextView的信息：
android.id.widget.TextView（{42f20a88等等}。

如何将textview添加到gridView？

解决方案

使用类似的方法尝试它
$ b $ p gridview.xml

 <？xml version =1.0encoding =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 15px> 
< / TextView> 
  

textView自定义适配器类

  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）; 
 
查看gridView; 
 
 if（convertView == null）{
 
 gridView = new View（context）; 
 
 //从mobile.xml获取布局
 gridView = inflater.inflate（R.layout.item，null）; 
 
 //将值设置为textview 
 TextView textView =（TextView）gridView 
 .findViewById（R.id.grid_item_label）; 
 textView.setText（textViewValues [position]）; 
} else {
 gridView =（View）convertView; 
} 
 
返回gridView; 
} 
 
 @Override 
 public int getCount（）{
 return textViewValues.length; 
} 
 
 @Override 
 public Object getItem（int position）{
 return null; 
} 
 
 @Override 
 public long getItemId（int position）{
 return 0; 
} 
 
} 
  

然后，最后设置适配器您的主要类

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


还要注意，您可以传递任何其他值，如文本的颜色和构造函数中的另一个参数，然后设置它们在适配器中就像...

  textView.setColor（textViewColors [position]）; 
  

对于所有textview共有的属性，您只能更改item.xml :) $ b $希望它能帮助你......

I already know how to add String's to a gridView in android however I want to add textviews to format the text( Gravity, color, etc). This is my current code:

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();
    }

Unfortunately when I run it the gridview simply gives me the information of each TextView: "android.id.widget.TextView({42f20a88 and so on}.

How would I add textview's to a gridView?

解决方案

try it with something like this

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>

Custom adapter class for textView

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;
        }

    }

and then , finally set adapter in your main class

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

also note that you can pass any other values like color of text and as another argument in constructor and then set them in adapter like ...

textView.setColor(textViewColors[position]); 

for attributes that all textview have in common you can change the item.xml only :) i hope it helped you ....

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