问题描述
每当我尝试从 strings.xml 访问字符串时,我都会收到 android.content.res.Resources$NotFoundException 的错误,当我通过对字符串值进行硬编码来执行相同操作时,我不会遇到任何问题. 谁能帮我理解这里的问题?
我在下面的 UnitUtils.java 文件中遇到了这个问题,我在下面评论的行中遇到了错误
UnitUtils.java
public class UnitUtils {
public static String getToken(String name) {
return unitNametoToken.get(name);
}
private static Map<String,String> unitNametoToken = new HashMap<String,String>();
static {
//unitNametoToken.put(Resources.getSystem().getString(R.string.tempkelvin),"K"); dosent works
//unitNametoToken.put("Celsius","C"); works
unitNametoToken.put("Fahrenheit","F");
unitNametoToken.put("Celsius","°C");
unitNametoToken.put("millimeter","mm");
unitNametoToken.put("centimeter","cm");
unitNametoToken.put("meter","m");
unitNametoToken.put("kilometer","km");
unitNametoToken.put("inch","in");
unitNametoToken.put("foot/feet","ft");
unitNametoToken.put("yard","yd");
unitNametoToken.put("mile","mi");
unitNametoToken.put("nautical mile","nmi");
}
public static Map<String,String> getUnitNametoToken() {
return unitNametoToken;
}
}
调用 unitutils 的代码片段(检查注释行) 主Activity.java
unitFrom = mFromSpinner.getItemAtPosition(0).toString();
//fromInput.setHint(UnitUtils.getToken(unitFrom));
unitTo = mToSpinner.getItemAtPosition(0).toString();
toInput.setHint(UnitUtils.getToken(unitTo));
if(view.getParent() == mFromSpinner) {
unitFrom = mFromSpinner.getItemAtPosition(position).toString()
}
strings.xml
<!-- temperature strings-->
<string name="tempcelcius">Celsius</string>
<string name="tempkelvin">Kelvin</string>
<string name="tempfaren">Fahrenheit</string>
LogCat
E/.rex.calculato: No package ID 7f found for ID 0x7f0f0082.
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.rex.calculator,PID: 7531
java.lang.ExceptionInInitializerError
at com.rex.unitconverter.UnitUtils.getToken(UnitUtils.java:13)
at com.rex.unitconverter.UnitConverteractivity.onItemSelected(UnitConverteractivity.java:94)
at android.widget.AdapterView.fireOnSelected(AdapterView.java:957)
at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:946)
at android.widget.AdapterView.access$300(AdapterView.java:55)
at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:910)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7698)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)
Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x7f0f0082
at android.content.res.Resources.getText(Resources.java:444)
at android.content.res.Resources.getString(Resources.java:537)
at com.rex.unitconverter.UnitUtils.<clinit>(UnitUtils.java:18)
at com.rex.unitconverter.UnitUtils.getToken(UnitUtils.java:13)
at com.rex.unitconverter.UnitConverteractivity.onItemSelected(UnitConverteractivity.java:94)
at android.widget.AdapterView.fireOnSelected(AdapterView.java:957)
at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:946)
at android.widget.AdapterView.access$300(AdapterView.java:55)
at android.widget.AdapterView$SelectionNotifier.run(AdapterView.java:910)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:223)
at android.app.ActivityThread.main(ActivityThread.java:7698)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)
I/Process: Sending signal. PID: 7531 SIG: 9
解决方法
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