例如,如果我有这样的空布局:
layout1.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>
还有其他一些布局:
layout2.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView 1" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button 2" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button 3"
android:layout_weight="1"/>
</LinearLayout>
我想以编程方式将layout2.xml
添加到layout1.xml
。我需要有多个不同的版本layout2.xml
,我会在需要时添加它。每个文本在TextView和Buttons上都有不同的文本。
如果是普通的Android视图,我通常会使用addView
:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv1 = new TextView(this);
tv1.setText("HELLO");
my_linear_layout.addView(tv1);
Button btn2 = new Button(this);
bt2.setText("WORLD");
my_linear_layout.addView(btn2);
}
如果我没有像TextView或Button这样简单的东西,并且我有自己的xml定义的View,我怎么能这样做呢?
是否可以以某种方式将所有视图放在适配器中,就像ListView一样,然后在需要时获取它并在这些视图上调用addView
?
答案 0 :(得分:41)
您可以给layout2.xml文件充气,编辑文本,然后将其添加到第一个布局:
public class MyActivity extends Activity {
private ViewGroup mLinearLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout1);
mLinearLayout = (ViewGroup) findViewById(R.id.linear_layout);
addLayout("This is text 1", "This is first button", "This is second Button");
}
private void addLayout(String textViewText, String buttonText1, String buttonText2) {
View layout2 = LayoutInflater.from(this).inflate(R.layout.layout2, mLinearLayout, false);
TextView textView = (TextView) layout2.findViewById(R.id.button1);
Button button1 = (Button) layout2.findViewById(R.id.button2);
Button button2 = (Button) layout2.findViewById(R.id.button3);
textView1.setText(textViewText);
button1.setText(buttonText1);
button2.setText(buttonText2);
mLinearLayout.addView(layout2);
}
}
您可能希望将layout2.xml根视图的android:layout_height
更改为wrap_content
。
答案 1 :(得分:12)
layout1包含ScrollView作为父布局,主要LinearLayout作为子项,如果没有行项目更多屏幕大小ScrollView句柄溢出项目带滚动:
layout1.xml
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/my_linear_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</ScrollView>
使用LayoutInflater在父级LinearLayout中添加行项目:
private LinearLayout my_linear_layout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout1);
my_linear_layout = (LinearLayout) findViewById(R.id.my_linear_layout);
for(int i=1;i<=5;i++){
View view = LayoutInflater.from(this).inflate(R.layout.layout2,null);
TextView button1 = (TextView) view.findViewById(R.id.button1);
Button button2 = (Button) view.findViewById(R.id.button2);
TextView button3 = (TextView) view.findViewById(R.id.button3);
button1.setText("HELLO " + i);
button2.setText("HELLO "+i);
button3.setText("HELLO "+i);
my_linear_layout.addView(view);
}
}
答案 2 :(得分:4)
尝试这种方法
将id添加到linearlayout layout1.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/firstlayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
</LinearLayout>
在oncreate中
LinearLayout firstlayout=(LinearLayout)findviewbyId(R.id.firstlayout);
LinearLayout secondlayoout=(LinearLayout)this.getLayoutInflater().inflate(R.layout.layout2,null); //inflating view from xml
TextView btn1=(TextView)secondlayoout.findviewbyId(R.id.button1);
btn1.settext("TEST");
firstlayout.addview(secondlayoout);