Android:以编程方式从Java代码填充微调器
如何以编程方式从java代码填充微调器 布局中有一个微调器,如下所示:Android:以编程方式从Java代码填充微调器,android,android-layout,android-spinner,Android,Android Layout,Android Spinner,如何以编程方式从java代码填充微调器 布局中有一个微调器,如下所示: <Spinner android:id="@+id/consultation_deseases" android:layout_width="@dimen/bigSpinnerWidth" android:layout_height="@dimen/bigSpinnerHeight" android:prompt="@string/disease_prompt" />
<Spinner
android:id="@+id/consultation_deseases"
android:layout_width="@dimen/bigSpinnerWidth"
android:layout_height="@dimen/bigSpinnerHeight"
android:prompt="@string/disease_prompt" />
使用java代码,我需要创建适配器并添加项。以下是一个完全以编程方式实现的示例:
// you need to have a list of data that you want the spinner to display
List<String> spinnerArray = new ArrayList<String>();
spinnerArray.add("item1");
spinnerArray.add("item2");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
this, android.R.layout.simple_spinner_item, spinnerArray);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
Spinner sItems = (Spinner) findViewById(R.id.spinner1);
sItems.setAdapter(adapter);
- 这是一个旋转器
- 通过字符串列表填充数据
- 调整微调器的大小并将其添加到我的视图中
- 设置微调器字体的格式(字体大小、颜色、填充)
- 清除旋转器
- 向微调器添加新值
- 重新绘制旋转器
Spinner varSpinner;
List<String> varSpinnerData;
float varScaleX;
float varScaleY;
C-创建单击处理程序并使用它设置字体
mySpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int myPosition, long myID) {
Log.i("renderSpinner -> ", "onItemSelected: " + myPosition + "/" + myID);
((TextView) parentView.getChildAt(0)).setTextColor(Color.GREEN);
((TextView) parentView.getChildAt(0)).setTextSize(TypedValue.COMPLEX_UNIT_PX, (int) (varScaleY * 22.0f) );
((TextView) parentView.getChildAt(0)).setPadding(1,1,1,1);
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
}
}
我无法在UpdateInitSpinner中解决的问题是执行varSpinner.setSelection(0);并自动激活自定义字体设置
更新:
这个“丑陋”的解决方案解决了varSpinner.setSelection(0);问题,但我对此不太满意:
private void updateInitSpinners(){
String mySelected = varSpinner.getSelectedItem().toString();
Log.i("TPRenderECommerce_Dialogue -> ", "updateInitSpinners -> mySelected: " + mySelected);
varSpinnerData.clear();
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(varRoot, android.R.layout.simple_spinner_item, varSpinnerData);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
varSpinner.setAdapter(spinnerArrayAdapter);
varSpinnerData.add("Hello World");
varSpinnerData.add("Hello World 2");
((BaseAdapter) varSpinner.getAdapter()).notifyDataSetChanged();
varSpinner.invalidate();
varSpinner.setSelection(0);
}
private void updateInitSpinners(){
字符串mySelected=varSpinner.getSelectedItem().toString();
Log.i(“TPRenderECommerce_对话->”,“updateMonitorSpinners->mySelected:“+mySelected”);
varSpinnerData.clear();
ArrayAdapter SpinnerayAdapter=新的ArrayAdapter(varRoot,android.R.layout.simple\u spinner\u项,varSpinnerData);
spinnerrayadapter.setDropDownViewResource(android.R.layout.simple\u微调器\u下拉菜单\u项);
设置适配器(spinnerrayadapter);
varSpinnerData.add(“Hello World”);
添加(“Hello World 2”);
((BaseAdapter)varSpinner.getAdapter()).notifyDataSetChanged();
varSpinner.invalidate();
varSpinner.setSelection(0);
}
}
希望这有助于
FrameLayout.LayoutParams myParamsLayout = new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.MATCH_PARENT,
FrameLayout.LayoutParams.WRAP_CONTENT);
myParamsLayout.gravity = Gravity.NO_GRAVITY;
myParamsLayout.leftMargin = (int) (100 * varScaleX);
myParamsLayout.topMargin = (int) (350 * varScaleY);
myParamsLayout.width = (int) (300 * varScaleX);;
myParamsLayout.height = (int) (60 * varScaleY);;
varLayoutECommerce_Dialogue.addView(mySpinner, myParamsLayout);
mySpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int myPosition, long myID) {
Log.i("renderSpinner -> ", "onItemSelected: " + myPosition + "/" + myID);
((TextView) parentView.getChildAt(0)).setTextColor(Color.GREEN);
((TextView) parentView.getChildAt(0)).setTextSize(TypedValue.COMPLEX_UNIT_PX, (int) (varScaleY * 22.0f) );
((TextView) parentView.getChildAt(0)).setPadding(1,1,1,1);
}
@Override
public void onNothingSelected(AdapterView<?> parentView) {
// your code here
}
});
}
private void updateInitSpinners(){
String mySelected = varSpinner.getSelectedItem().toString();
Log.i("TPRenderECommerce_Dialogue -> ", "updateInitSpinners -> mySelected: " + mySelected);
varSpinnerData.clear();
varSpinnerData.add("Hello World");
varSpinnerData.add("Hello World 2");
((BaseAdapter) varSpinner.getAdapter()).notifyDataSetChanged();
varSpinner.invalidate();
varSpinner.setSelection(1);
}
private void updateInitSpinners(){
String mySelected = varSpinner.getSelectedItem().toString();
Log.i("TPRenderECommerce_Dialogue -> ", "updateInitSpinners -> mySelected: " + mySelected);
varSpinnerData.clear();
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(varRoot, android.R.layout.simple_spinner_item, varSpinnerData);
spinnerArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
varSpinner.setAdapter(spinnerArrayAdapter);
varSpinnerData.add("Hello World");
varSpinnerData.add("Hello World 2");
((BaseAdapter) varSpinner.getAdapter()).notifyDataSetChanged();
varSpinner.invalidate();
varSpinner.setSelection(0);
}