如何編寫用於在Android中顯示多個餅圖的ListView適配器

Question

我想使用ListView在ListView的每一行中顯示餅圖。

這是我的餅圖類

public class PieChart extends View { 

    public PieChart(Context context) { 
     super(context); 
    } 

    public PieChart(Context context, AttributeSet attrs){ 
     super(context, attrs); 
    } 

    public void onDraw(Canvas canvas) { 
     Paint paint = new Paint(); 
     paint.setColor(Color.RED);  
     canvas.drawArc(new RectF(0, 0, 150, 150), 180, 90, true, paint);    
     paint.setColor(Color.BLUE);   
     canvas.drawArc(new RectF(0, 0, 150, 150), 90, 90, true, paint); 
    } 
} 

這是我爲ListView佈局

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="@color/background" 
    android:orientation="vertical" > 

    <TextView 
     style="@style/title_bar" 
     android:text="@string/scenario_reports" /> 

    <ListView 
     android:id="@android:id/list" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:background="@color/list_view_item_bg" 
     android:cacheColorHint="#00000000" 
     android:divider="@color/list_view_divider" 
     android:dividerHeight="2dip" > 
    </ListView> 

</LinearLayout> 

這是我的ListView的行佈局

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" > 

    <view 
     android:id="@+id/pie_chart" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     class="com.bob.hellotest.GameView" /> 

    <TextView 
     android:id="@+id/scenario_name" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_toLeftOf="@id/pie_chart" 
     android:padding="10dp" 
     android:textSize="16sp" /> 

</RelativeLayout> 

這是活動的onCreate方法

public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.scenario_report); 
    } 

我的問題是適配器

public View getView(int position, View row, ViewGroup parent) { 
     LayoutInflater li = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     View rowView = li.inflate(R.layout.list_view_scenario_pie, parent, false); 
     View pie = (View) rowView.findViewById(R.id.pie_chart); 
     TextView name = (TextView) rowView.findViewById(R.id.scenario_name); 

    ???????????????? 

     return rowView; 
    } 

我被困在適配器，我不知道如何把它收回去適配器。 任何人都可以幫忙。乾杯！！

Answer 1

更改列表行的佈局

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" > 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:id="@+id/pie_chart" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
/> 

<TextView 
    android:id="@+id/scenario_name" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:layout_toLeftOf="@id/pie_chart" 
    android:padding="10dp" 
    android:textSize="16sp" /> 

</RelativeLayout> 

你getView（）應該是這樣的

public View getView(int position, View row, ViewGroup parent) { 
    if(row == null) { 
     row = this.inflator.inflate(layout, null); 
    } 
    ViewGroup vg = (ViewGroup)row.findViewById(R.id. pie_chart); 
    PieChart pieChart = new PieChart(row.getContext); 
    vg.addView(PieChar); 

    return row; 
}