我创建了一个复合组件 Box
,我想将其添加到布局中。 框
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);
}
}
如果我将 Box
添加到主 xml 文件中,一切正常:
<com.mypackage.alexey.Box
android:id="@+id/mybox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
/>
问题是我想像这样以编程方式创建许多框:Box mybox= new Box();
。怎么做?
最佳答案
我建议您还实现仅采用 Context
的 LinearLayout
的构造函数:
public Box(Context context) {
super(context);
}
然后在您的 Activity
中,当您想要添加一个新的 Box
时,实例化 Box
类并将其添加到您的布局中:
// 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);
关于android - 如何以编程方式添加到布局复合组件 Android?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10372451/