我的assets文件夹中有一个ttf字体文件。我知道如何将它用于textviews:
Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
textview1.setTypeface(externalFont);
我已经定义了在我自己的xml文件中查找我的微调器文本(如同在android中一样):
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+android:id/text1"
style="?android:attr/spinnerItemStyle"
android:singleLine="true"
android:textColor="#ffffff"
android:gravity="center"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee" />
我只是无法从代码中引用此textview,我总是得到空指针异常。例如。我试过了:
TextView spinner_text=(TextView)findViewById(R.id.text1);
spinner_text.setTypeface(externalFont);
是否可以选择我的外部字体,即使是我自己的xml中定义的微调文本?
谢谢。
这有效:
String [] items = new String[2];
items[0]="Something1";
items[1]="Something2";
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
R.layout.spinaca, items) {
public View getView(int position, View convertView, ViewGroup parent) {
View v = super.getView(position, convertView, parent);
Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
((TextView) v).setTypeface(externalFont);
return v;
}
public View getDropDownView(int position, View convertView, ViewGroup parent) {
View v =super.getDropDownView(position, convertView, parent);
Typeface externalFont=Typeface.createFromAsset(getAssets(), "fonts/HelveticaNeueLTCom-Lt.ttf");
((TextView) v).setTypeface(externalFont);
v.setBackgroundColor(Color.GREEN);
return v;
}
};
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
可能需要添加
import android.view.ViewGroup;
到您文件顶部的导入列表。出于某种原因,当Eclipse无法识别代码中涉及的ViewGroup类时,它不会提出此建议。
答案 0 :(得分:77)
这对我有用(使用来自CommonsWare's和gsanllorente's答案的提示):
private static class MySpinnerAdapter extends ArrayAdapter<String> {
// Initialise custom font, for example:
Typeface font = Typeface.createFromAsset(getContext().getAssets(),
"fonts/Blambot.otf");
// (In reality I used a manager which caches the Typeface objects)
// Typeface font = FontManager.getInstance().getFont(getContext(), BLAMBOT);
private MySpinnerAdapter(Context context, int resource, List<String> items) {
super(context, resource, items);
}
// Affects default (closed) state of the spinner
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextView view = (TextView) super.getView(position, convertView, parent);
view.setTypeface(font);
return view;
}
// Affects opened state of the spinner
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
TextView view = (TextView) super.getDropDownView(position, convertView, parent);
view.setTypeface(font);
return view;
}
}
如果您和我一样,最初使用ArrayAdapter.createFromResource()
和数组资源(如Spinner documentation)填充Spinner,那么您可以像这样使用MySpinnerAdapter:
MySpinnerAdapter<String> adapter = new MySpinnerAdapter(
getContext(),
R.layout.view_spinner_item,
Arrays.asList(getResources().getStringArray(R.array.my_array))
);
spinner.setAdapter(adapter);
答案 1 :(得分:24)
您可以在SpinnerAdapter
和getView()
中通过自己的自定义getDropDownView()
应用字体。
答案 2 :(得分:15)
如果在另一个文件中实现适配器,则可以从适配器的构造函数访问“getAssets()”函数,因为您将Context作为参数。
public class YourItemAdapter extends ArrayAdapter<String> {
int recurso;
Typeface tf;
public YourItemAdapter(Context _context, int _resource,
List<String> _items) {
super(_context, _resource, _items);
recurso=_resource;
tf=Typeface.createFromAsset(_context.getAssets(),"font/digital-7.ttf");
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//You can use the new tf here.
TextView spinner_text=(TextView)findViewById(R.id.text1);
spinner_text.setTypeface(tf);
}
}
答案 3 :(得分:4)
尝试创建自定义custom_spinner.xml
<?xml version="1.0" encoding="utf-8"?>
<com.xxxx.xxxx.CheckedTextViewC
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee"
android:textAlignment="center"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:textSize="18sp"
/>
像这样创建自定义CheckedtextView
import android.content.Context;
import android.graphics.Typeface;
import android.util.AttributeSet;
import android.widget.CheckedTextView;
public class CheckedTextViewC extends CheckedTextView {
public CheckedTextViewC(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// TODO Auto-generated constructor stub
}
public CheckedTextViewC(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
}
public CheckedTextViewC(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
public void setTypeface(Typeface tf, int style) {
if(!this.isInEditMode()){
Typeface normalTypeface = Typeface.createFromAsset(getContext().getAssets(), "font/Roboto-Light.ttf");
Typeface boldTypeface = Typeface.createFromAsset(getContext().getAssets(), "font/Roboto-Light.ttf");
if (style == Typeface.BOLD) {
super.setTypeface(boldTypeface/*, -1*/);
} else {
super.setTypeface(normalTypeface/*, -1*/);
}
}
}
}
实施新布局
adapter= new ArrayAdapter <String>(Menu.this,R.layout.custom_spinner, list);
答案 4 :(得分:2)
请遵循FontTextView,FontEditView,FontRadioButton,FontCheckBox和FontButton的基本自定义。
[有关确切答案,请参阅本指南,然后参阅: https://stackoverflow.com/a/51113022/787399]
在ArrayAdapter项布局中使用自定义FontTextView,如下所示:
public class FontEditText extends AppCompatEditText {
// private String FONT = "fonts/roboto_regular.ttf";
public FontEditText(Context context) {
super(context, null);
// setFontFromAsset(context, null, R.style.DefaultFontTextView);
// FONT = getContext().getString(R.string.font_roboto_regular);
}
public FontEditText(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
setFontFromAsset(context, attrs, R.attr.fetFontStyle);
}
public FontEditText(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
setFontFromAsset(context, attrs, defStyleAttr);
}
private void setFontFromAsset(Context context, AttributeSet attrs, int defStyle) {
BaseActivity activity = (BaseActivity)((MyApplication) context.getApplicationContext()).getCurrentActivity();
FontAndLocaleManager fontAndLocaleManager = activity.getFontAndLocaleManager();
fontAndLocaleManager.setFontFromAsset(this, R.styleable.FontEditText, R.styleable.FontEditText_fetFontFace, attrs, defStyle);
}
}
使用代码:
public void setFontFromAsset(View view, int[] resViewStyleable, int resStyleableViewFontFace, AttributeSet attrs, int defStyle) {
String strFont = null;
Typeface tfFontFace = null;
String strButton = FontButton.class.getCanonicalName(),
strTextView = FontTextView.class.getCanonicalName(),
strEditText = FontEditText.class.getCanonicalName(),
strView = view.getClass().getCanonicalName();
try {
if (view.isInEditMode()) {
return;
}
//R.string.font_roboto_regular
strFont = context.getString(R.string.font_roboto_regular);
tfFontFace = Typeface.createFromAsset(context.getAssets(), strFont);
//AttributeSet set, int[] attrs, int defStyleAttr, int defStyleRes
//R.styleable.FontButton
TypedArray a = context.obtainStyledAttributes(attrs, resViewStyleable, defStyle, 0);
//R.styleable.FontButton_btFontFace
String derivedFont = a.getString(resStyleableViewFontFace);
a.recycle();
//==
try {
if (derivedFont != null) {
Typeface derivedFontFace = Typeface.createFromAsset(context.getAssets(), derivedFont);
if (strView.equals(strButton)) {
((FontButton) view).setTypeface(derivedFontFace);
} else if (strView.equals(strTextView)) {
((FontTextView) view).setTypeface(derivedFontFace);
} else if (strView.equals(strEditText)) {
((FontEditText) view).setTypeface(derivedFontFace);
}
return;
}
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
try {
if (strFont != null && tfFontFace != null) {
if (strView.equals(strButton)) {
((FontButton) view).setTypeface(tfFontFace);
} else if (strView.equals(strTextView)) {
((FontTextView) view).setTypeface(tfFontFace);
} else if (strView.equals(strEditText)) {
((FontEditText) view).setTypeface(tfFontFace);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
在相应的xml中描述样式和属性:
<!--FontTextView-->
<declare-styleable name="FontTextViewStyle">
<!-- Style of the FontTextView. -->
<attr name="ftvFontStyle" format="reference"/>
</declare-styleable>
<declare-styleable name="FontTextView">
<!-- Font face of FontTextView. -->
<attr name="ftvFontFace" format="reference"/>
</declare-styleable>
和
<!--FontTextView-->
<style name="StyledFontTextView" parent="@android:style/Theme.Light">
<item name="ftvFontStyle">@style/DefaultFontTextView</item>
</style>
<style name="DefaultFontTextView">
<item name="ftvFontFace">@string/font_roboto_regular</item>
</style>
定义更多样式:
<style name="App_TextViewStyle" parent="@android:style/Widget.TextView">
<item name="android:textColor">@color/text_grey</item>
<item name="android:textSize">@dimen/sp_20</item>
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
</style>
<style name="App_TextViewStyleMedium" parent="@android:style/Widget.TextView">
<item name="android:textColor">@color/text_hint</item>
<item name="android:textSize">@dimen/sp_18</item>
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
</style>
<style name="App_TextViewStyleSmall" parent="@android:style/Widget.TextView">
<item name="android:textColor">@color/text_grey_light</item>
<item name="android:textSize">@dimen/sp_14</item>
<item name="android:layout_width">match_parent</item>
<item name="android:layout_height">wrap_content</item>
</style>
strings.xml中的提及字体:
...
<string name="font_roboto_regular">fonts/roboto_regular.ttf</string>
...
并在布局中使用以节省一些代码和时间:
<com.mypackage.custom_views.FontTextView
style="@style/App_TextViewStyleMedium"
android:layout_gravity="start|bottom"
android:gravity="start|bottom"
app:fetFontFace="@string/font_roboto_regular"
android:text="@string/are_you_a" />
在Android级别16及更高级别上,所有这些操作都得到了简化,因为现在您可以将TTF和其他字体资源保留在/res/font
文件夹中,而不是资产中。这将删除大多数自定义类,样式和属性,请参见:
快乐的编码风格!! :-)
答案 5 :(得分:2)
这是我先前回答的继续:https://stackoverflow.com/a/51100507/787399
出于兼容性原因,您可以使用样式和自定义 针对Android中的小部件的类。虽然高于Android水平 15日,引入了新的
/res/font
资源文件夹:
步骤1:声明item_spinner.xml
<?xml version="1.0" encoding="utf-8"?>
<com.my_package.custom_views.FontTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tv_spinner"
style="@style/App_TextViewStyleSmall"
android:layout_gravity="start|bottom"
android:layout_marginLeft="@dimen/dp_5"
android:layout_marginStart="@dimen/dp_5"
android:ellipsize="marquee"
android:gravity="start|bottom"
android:padding="@dimen/dp_10"
android:singleLine="true"
android:textAlignment="inherit" />
<!--declared in layout: item_spinner.xml-->
<!-- removed attributes: android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textColor="@color/text_grey_light"
android:textSize="@dimen/sp_14" -->
<!--style="?android:attr/spinnerItemStyle"-->
步骤2:声明item_spinner_dropdown.xml:
<?xml version="1.0" encoding="utf-8"?>
<com.my_package.custom_views.FontTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tv_spinner"
style="@style/App_TextViewStyleSmall"
android:layout_gravity="start|bottom"
android:layout_marginLeft="@dimen/dp_5"
android:layout_marginStart="@dimen/dp_5"
android:ellipsize="marquee"
android:gravity="start|bottom"
android:padding="@dimen/dp_10"
android:singleLine="true" />
<!--declared in layout: item_spinner_dropdown.xml -->
<!--removed: ?android:attr/dropdownListPreferredItemHeight-->
<!--style="?android:attr/spinnerDropDownItemStyle"-->
第3步:在布局中使用微调框:
<LinearLayout
android:id="@+id/ll_my_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/fet_bus_entity"
android:layout_marginTop="@dimen/dp_12"
android:orientation="horizontal">
<com.my_package.custom_views.FontTextView
style="@style/App_TextViewStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|bottom"
android:gravity="start|bottom"
android:text="@string/are_you_a" />
<Spinner
android:id="@+id/sp_my_spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/dp_5"
android:layout_marginStart="@dimen/dp_5"
android:layout_gravity="end|bottom"
android:spinnerMode="dropdown" />
</LinearLayout>
[注意:FontTextView的ID在布局,微调项和下拉项中都相同]
第4步:在“活动/片段”中使用它:
private void initSpinnerBusinessType(View rootView) {
String[] ar_dd_bus_type = getResources().getStringArray(R.array.ar_dd_bus_type);
List<String> lst_bus_type = Arrays.asList(ar_dd_bus_type);
ArrayList<String> ar_bus_type = new ArrayList<>(lst_bus_type);
//==
ArrayAdapter<String> adapter = new ArrayAdapter<>(activity, R.layout.item_spinner, R.id.tv_spinner, ar_bus_type);
adapter.setDropDownViewResource(R.layout
.item_spinner_dropdown);
//=========
Spinner sp_my_spinner= rootView.findViewById(R.id.sp_my_spinner);
sp_my_spinner.setAdapter(adapter);
}
[有关更多指导,请参阅我的另一篇文章:https://stackoverflow.com/a/51077569/787399和https://stackoverflow.com/a/22164007/787399]
答案 6 :(得分:-1)
伙计们我找到了一个很棒的解决方案,我通过助手包装orignal适配器,如
使用此课程SpinnerViewHelper并使用Android
快乐编程new SpinnerViewHelper((Spinner)view.findViewById(R.id.labelSurveyNumber),(parent, v, position, id) -> UrduFontHelper.set(v));
使用Lambda表达式。