我创建了一个复合组件Box
,我想将其添加到布局中。 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
上课:
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,如:
<com.mypackage.alexey.Box
android:id="@+id/mybox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
/>
问题在于我想以编程方式创建许多方框:Box mybox= new Box();
。怎么做?
答案 0 :(得分:9)
我建议你也实现只需要LinearLayout
的{{1}}的构造函数:
Context
然后在public Box(Context context) {
super(context);
}
中,当您想要添加新的Activity
时,实例化Box
类并将其添加到您的布局中:
Box