[英]How I can update variable by preference in android
我尝试在android中开发软键盘,我想在扩展InputmethodeServise的类中使用Xml文件,以使其成为keyboardView的属性,并且我在布局资源中有几个xml(input1.xml,input2.xml, input3.xml),然后通过首选项调用这些xml:
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
String key) {
if(key.equals("textColor"))
{
String selectedColor = sharedPreferences.getString(key, "green");
if (selectedColor.equals("red"))
{
sw=1;
}
if (selectedColor.equals("blue"))
{
sw=2;
}
if (selectedColor.equals(" yellow"))
{
sw=3;
}
}
}
而选择xml文件的方法是:
int sw;
@Override public void onCreate() {
prefs = PreferenceManager.getDefaultSharedPreferences(this);
prefs.registerOnSharedPreferenceChangeListener(this);
super.onCreate();
switch(sw)
{ case 1:
mInputView = (LatinKeyboardView) getLayoutInflater().inflate(R.layout.input1, null);
break;
case 2:
mInputView = (LatinKeyboardView) getLayoutInflater().inflate(R.layout.input1, null);
break;
case 3: mInputView = (LatinKeyboardView) getLayoutInflater().inflate(R.layout.input2, null);
break
default:
mInputView = (LatinKeyboardView) getLayoutInflater().inflate(R.layout.input, null);
}
}
但是,当我从prefrnceActivitey中选择任何项目时,xml文件未更改,这意味着变量(sw)无法更新。 我如何通过偏好更新(sw)? 请任何人关注我的问题
公共KeyboardView mInputView; 公共视图onCreateInputView(){
SharedPreferences pre = getSharedPreferences("test", sw);
int theme = pre.getInt("theme", sw);
if(theme == 1)
{
this.mInputView = (KeyboardView) this.getLayoutInflater().inflate(R.layout.input1, null);
}else
{
this.mInputView = (KeyboardView) this.getLayoutInflater().inflate(R.layout.input2, null);
}
this.mInputView.setOnKeyboardActionListener(this);
this.mInputView.setKeyboard(this.mQwertyKeyboard);
return this.mInputView;
}
并在onStartInputView中执行此操作
public void onStartInputView(EditorInfo attribute, boolean restarting) {
super.onStartInputView(attribute, restarting);
setInputView(onCreateInputView());
}
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