[英]How to add views dynamically to a RelativeLayout already declared in the xml layout?
I declared a RelativeLayout
in a xml layout file. 我在xml布局文件中声明了
RelativeLayout
。 Now I want to add Views
from code to the existing Layout. 现在我想将代码中的
Views
添加到现有布局中。 I added a Button
dynamically to this existing layout as below through code: 我通过代码动态地向现有布局添加了一个
Button
:
rLayout = (RelativeLayout)findViewById(R.id.rlayout);
LayoutParams lprams = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
Button tv1 = new Button(this);
tv1.setText("Hello");
tv1.setLayoutParams(lprams);
tv1.setId(1);
rLayout.addView(tv1);
Now I need to add another Button
to the right of the already added Button
. 现在我需要另一个添加
Button
到已经添加的右侧Button
。 I am not able to find the way in which I can add the new one to the right of the previously added button. 我无法找到我可以在之前添加的按钮右侧添加新的方式。
Add the rule RelativeLayout.RIGHT_OF
for the second added Button
LayoutParams
: 为第二个添加的
Button
LayoutParams
添加规则RelativeLayout.RIGHT_OF
:
// first Button
RelativeLayout rLayout = (RelativeLayout) findViewById(R.id.rlayout);
RelativeLayout.LayoutParams lprams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
Button tv1 = new Button(this);
tv1.setText("Hello");
tv1.setLayoutParams(lprams);
tv1.setId(1);
rLayout.addView(tv1);
// second Button
RelativeLayout.LayoutParams newParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
Button tv2 = new Button(this);
tv1.setText("Hello2");
newParams.addRule(RelativeLayout.RIGHT_OF, 1);
tv2.setLayoutParams(newParams);
tv2.setId(2);
rLayout.addView(tv2);
may be this can help you, try it. 可能这可以帮到你,尝试一下。
rLayout = (RelativeLayout)findViewById(R.id.rlayout);
LayoutParams lprams = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
TableLayout tl=new TableLayout(this);
rLayout.addView(tl);
TableRow tr1=new TableRow(this);
tl.addView(tr1);
Button btn1 = new Button(this);
btn1.setText("Hello");
btn1.setLayoutParams(lprams);
btn1.setId(1);
tr1.addView(btn1);
TextView tv1 = new TextView(this);
tv1.setWidth(40);
tv1.setHeight(LayoutParams.WRAP_CONTENT);
tr1.addView(tv1);
Button btn2 = new Button(this);
btn2.setText("World");
btn2.setLayoutParams(lprams);
btn2.setId(2);
tr1.addView(btn2);
Create another button: 创建另一个按钮:
Button tv2 = new Button(this);
tv2.setText("World");
tv2.setLayoutParams(lprams);
tv2.setId(2);
Add add it into your RelativeLayout: 添加将其添加到RelativeLayout:
rLayout.addView(tv2);
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