请帮助我使用https://github.com/SimonVT/android-numberpicker中的NumberPicker
。
我有片段里面有我的按钮。单击按钮后,我想显示我的号码选择器(作为弹出窗口,而不是新屏幕)。
所以我做了什么:
我创建了NumberPickerCustomDialog
public class NumberPickerCustomDialog extends DialogFragment {
Context context;
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// get context
context = getActivity().getApplicationContext();
// make dialog object
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// get the layout inflater
LayoutInflater li = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// inflate our custom layout for the dialog to a View
View view = li.inflate(R.layout.activity_dark, null);
// inform the dialog it has a custom View
builder.setView(view);
// and if you need to call some method of the class
NumberPicker np = (NumberPicker) view
.findViewById(R.id.numberPicker);
// create the dialog from the builder then show
return builder.create();
}
}
现在在我的片段中,点击按钮后我尝试显示我的号码选择器:
FragmentManager fm = getFragmentManager();
NumberPickerCustomDialog yourDialog = new NumberPickerCustomDialog();
yourDialog.show(fm, "some_optional_tag");
我的布局看起来:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:gravity="center">
<net.simonvt.numberpicker.NumberPicker
android:id="@+id/numberPicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
我将库包含到项目中,复制了布局并出现错误:
04-17 11:33:28.264: E/AndroidRuntime(10891): FATAL EXCEPTION: main
04-17 11:33:28.264: E/AndroidRuntime(10891): android.view.InflateException: Binary XML file line #8: Error inflating class net.simonvt.numberpicker.NumberPicker
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.createView(LayoutInflater.java:613)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
04-17 11:33:28.264: E/AndroidRuntime(10891): at pl.package.jp.Me.NumberPickerCustomDialog.onCreateDialog(NumberPickerCustomDialog.java:26)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.DialogFragment.getLayoutInflater(DialogFragment.java:295)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
04-17 11:33:28.264: E/AndroidRuntime(10891): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:429)
我做错了什么?
答案 0 :(得分:6)
好的,我解决了这个问题。该库需要定义样式,即:
<style name="SampleTheme" parent="android:Theme">
<item name="numberPickerStyle">@style/NPWidget.Holo.NumberPicker</item>
</style>
<style name="SampleTheme.Light" parent="android:Theme.Light">
<item name="numberPickerStyle">@style/NPWidget.Holo.Light.NumberPicker</item>
</style>
并且在AndroidManifest.xml中,必须为活动定义样式,您要在其中使用自定义数字选择器:
<activity android:name=".Activity"
android:theme="@style/SampleTheme.Light">
</activity>