如何以编程方式添加到布局复合组件Android？

Question

我创建了一个复合组件Box，我想添加到布局中。 Box XML：

<?xml version="1.0" encoding="utf-8"?> 
<merge xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/linearLayoutForBlock" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:orientation="vertical"> 
    <LinearLayout 
     android:id="@+id/linearLayout1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" android:background="@drawable/screen_background" android:layout_marginLeft="5dp" android:layout_marginTop="5dp"> 
     <ImageButton 
      android:id="@+id/imageButtonContent" 
      android:layout_width="50dp" 
      android:layout_height="50dp" 
      android:layout_gravity="center_horizontal" 
      android:scaleType="fitCenter" 
      android:src="@drawable/beach_bed" android:background="@drawable/buttonbackground" android:clickable="true" android:layout_margin="5dp" android:contentDescription="@string/sample_text"/> 
     <TextView 
      android:id="@+id/textViewContent" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center_horizontal" 
      android:text="@string/sample_text" 
      android:textColor="@color/deep_blue" android:layout_margin="5dp"/> 
    </LinearLayout> 
</merge> 

Box类：

public class Box extends LinearLayout { 

    private TextView textContent; 
    private ImageView imageContent; 

    public Box(Context context, AttributeSet attrs) { 
     super(context, attrs); 
     ((Activity)getContext()).getLayoutInflater().inflate(R.layout.box, this); 
     setupViewItems(); 
    } 

    private void setupViewItems() { 
     textContent = (TextView) findViewById(R.id.textViewContent); 
     imageContent = (ImageView) findViewById(R.id.imageButtonContent); 
    } 

    public void setTextContent(String text) { 
     this.textContent.setText(text); 
    } 
    public void setImageContent(String tag) { 
     this.imageContent.setContentDescription(tag); 
    } 
} 

一切正常，如果我添加了Box像主要的XML文件：

<com.mypackage.alexey.Box 
android:id="@+id/mybox" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:orientation="horizontal" 
/> 

的问题是，我想以编程方式创建许多框，如下所示：Box mybox= new Box();。怎么做？

Answer 1

我建议你也实现，是以LinearLayout的构造函数只有一个Context：

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

然后在你的Activity，当你想添加一个新的Box，实例化Box类并将其添加到你的布局：

// I assumed you have a LinearLayout to which you want to add your Box 
LinearLayout parent = (LinearLayout) findViewById(R.id.parent_id); 
//create the Box and added to the parent above 
Box theBox = new Box(this); // if you are in an Activity 
//some LayoutParams to replicate your xml attributes 
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
// set the Orientation for the Box 
theBox.setOrientation(LinearLayout.HORIZONTAL); 
//add the Box 
parent.addView(theBox);