[英]Design spinner programmatically (android)
I need create spinner programmatically. 我需要以编程方式创建微调器。 I add spinner to linearLayout, its work but I don't know how chache designe it.
我将spinner添加到linearLayout,它的工作原理,但我不知道chache是如何设计的。
Example, I have this: 例子,我有这个:
How remove it?(highlighted in red) 如何将其删除?(以红色突出显示)
And how remove spinner text to center? 以及如何删除微调器文本居中?
My xml 我的xml
LinearLayout spinnerL add this my spinner LinearLayout spinnerL将此添加到我的微调器中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<LinearLayout
android:id="@+id/spinnerL"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_marginBottom="20dp"
/>
</RelativeLayout>
and main class 和主要阶层
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Array of choices
View linearLayout = findViewById(R.id.spinnerL);
ArrayList<String> list = new ArrayList<String>();
list.add("one");
list.add("two");
Spinner spinner = new Spinner(this);
//Make sure you have valid layout parameters.
spinner.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
ArrayAdapter spinnerArrayAdapter = new ArrayAdapter(this,
android.R.layout.simple_spinner_dropdown_item, list);
spinner.setAdapter(spinnerArrayAdapter);
((LinearLayout) linearLayout).addView(spinner );
}
To remove small triangle, simplest method is to set background drawable, for example: 要删除小三角形,最简单的方法是设置背景可绘制,例如:
spinner.setBackgroundResource(android.R.drawable.btn_default); spinner.setBackgroundResource(android.R.drawable.btn_default);
To align text center, you need to create layout for spinner, see examples 要对齐文本中心,您需要为微调器创建布局,请参见示例
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