Android 自定义微调适配器
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Custom Spinner Adapter
提问by AndroidDev
I wanted to apply a custom font to my spinner. The only way i found out is that to create a custom adapter. Here is my code
我想将自定义字体应用于我的微调器。我发现的唯一方法是创建自定义适配器。这是我的代码
private class CustomAdapter extends ArrayAdapter {
private Context context;
private List<CharSequence> itemList;
public CustomAdapter(Context context, int textViewResourceId,List<CharSequence> itemList) {
super(context, textViewResourceId);
this.context=context;
this.itemList=itemList;
}
public TextView getView(int position, View convertView, ViewGroup parent) {
TextView v = (TextView) super
.getView(position, convertView, parent);
Typeface myTypeFace = Typeface.createFromAsset(context.getAssets(),
"fonts/gilsanslight.otf");
v.setTypeface(myTypeFace);
v.setText(itemList.get(position));
return v;
}
public TextView getDropDownView(int position, View convertView,
ViewGroup parent) {
TextView v = (TextView) super
.getView(position, convertView, parent);
Typeface myTypeFace = Typeface.createFromAsset(context.getAssets(),
"fonts/gilsanslight.otf");
v.setTypeface(myTypeFace);
v.setText(itemList.get(position));
return v;
}
}
Then i use
然后我用
List<CharSequence> itemList = new ArrayList<CharSequence>(
Arrays.asList(items));
mySpinnerArrayAdapter = new CustomAdapter(context,android.R.layout.simple_spinner_item,itemList);
spinner.setAdapter(mySpinnerArrayAdapter);
After doing this, my adapter is empty. Can anyone please help me ? The items contains a list of countries.
这样做后，我的适配器是空的。谁能帮帮我吗 ？这些项目包含国家/地区列表。
Kind Regards,
亲切的问候，
回答by mukesh
Try
尝试
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(yourRowlayout, parent,
false);
TextView make = (TextView) row.findViewById(R.id.Make);
Typeface myTypeFace = Typeface.createFromAsset(context.getAssets(),
"fonts/gilsanslight.otf");
v.setTypeface(myTypeFace);
v.setText(itemList.get(position));
return row;
}
public View getDropDownView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(yourRowlayout, parent,
false);
TextView make = (TextView) row.findViewById(R.id.Make);
Typeface myTypeFace = Typeface.createFromAsset(context.getAssets(),
"fonts/gilsanslight.otf");
v.setTypeface(myTypeFace);
v.setText(itemList.get(position));
return row;
}
回答by Bhavesh Patadiya
Try this out
试试这个
Inside your Layout File:
在您的布局文件中：
<Spinner
android:id="@+id/spinnerview"
android:layout_width="180dp"
android:layout_height="42dp"
android:layout_marginLeft="105dp"
android:layout_marginTop="45dp"
android:background="@drawable/spinner_back"
android:paddingLeft="5dp"
android:spinnerMode="dropdown"
android:visibility="visible" />
inside your string.xml:
在您的string.xml：
<string-array name="spinner_array_environtment">
<item>Test</item>
<item>Production</item>
</string-array>
inside you Java File in onCreate()Method:
在onCreate()方法中的Java 文件中：
spinner_environment = (Spinner) findViewById(R.id.spinnerview);
adapter = ArrayAdapter.createFromResource(this,
R.array.spinner_array_environtment, R.layout.spinner);
adapter.setDropDownViewResource(R.layout.spinner);
spinner_environment.setAdapter(adapter);
Make new spinner.xmlfile to your layout folder :
spinner.xml在您的布局文件夹中创建新文件：
inside spinner.xmlfile :
内部spinner.xml文件：
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/spinnerTarget"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="25dp"
android:textColor="#4C4646" />
Thats it!!!
就是这样！！！
回答by Vipin Sharma
Pass itemList as parameter in super class constructor
在超类构造函数中将 itemList 作为参数传递
public CustomAdapter(Context context, int textViewResourceId,List<CharSequence> itemList) {
super(context, textViewResourceId, itemList);
this.context=context;
this.itemList=itemList;
}
回答by Otpidus
The simplest, I think :)
最简单的，我认为:)
List<String> listOfItems = getListOfItems(); // returns ArrayList<String>
ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, listOfItems);
targetSpinner.setAdapter(spinnerAdapter);
Ok, to simply put a list of string in a spinner shouldn't force us to implement an Adapter. That's a code blot and getting a bit pattern crazy, I think.
好的，简单地将字符串列表放入微调器中不应该强迫我们实现适配器。我认为这是一个代码污点，并且有点模式疯狂。
Trick is the simple_spinner_item id - damn, I like the R.id mechanism but this isn't intuitive from the docs.
技巧是 simple_spinner_item id - 该死，我喜欢 R.id 机制，但这从文档中看并不直观。
回答by Ninja Coding
this worked for me (ussing android.R.layout.simple_spinner_dropdown_item):
这个工作对我来说（尤斯android.R.layout。simple_spinner_dropdown_item）：
@Override
public View getView(int position, View convertView, ViewGroup parent) {
CheckedTextView checkedTextView = (CheckedTextView) super.getView(position, convertView, parent);
checkedTextView.setText(itemList.get(position));
return checkedTextView;
}
i think it's a better solution because you don't inflate multiple times.
我认为这是一个更好的解决方案，因为您不会多次充气。
