我正在开发一个 Android 应用程序。我有这个 xml 布局：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LeaveParamsActivity" >
<Button
android:id="@+id/sendparkalertbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="@string/accept" />
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/sendparkalertbutton"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/leaveparamsheader"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:text="@string/parkalertparams"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/parkalertsparamshere"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/leaveparamsheader"
android:gravity="center"
android:text="@string/parkalertparamshere"
android:textAppearance="?android:attr/textAppearanceMedium" />
<RadioGroup
android:id="@+id/radioGroupLeave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/parkalertsparamshere" >
<RadioButton
android:id="@+id/radioleave0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="@string/yes" />
<RadioButton
android:id="@+id/radioleave1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/no" />
</RadioGroup>
<TimePicker
android:id="@+id/timePickerLeave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/parkalertparamstimetext" />
<TextView
android:id="@+id/parkalertsparamsadress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/radioGroupLeave"
android:layout_toRightOf="@+id/radioGroupLeave"
android:gravity="center"
android:text="@string/parkalertparamsadress"
android:textAppearance="?android:attr/textAppearanceMedium" />
<EditText
android:id="@+id/parkalertadress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/radioGroupLeave"
android:layout_alignParentRight="true"
android:layout_toRightOf="@+id/radioGroupLeave"
android:layout_marginLeft="10dp"
android:ems="10" >
<requestFocus />
</EditText>
<TextView
android:id="@+id/parkalertparamstimetext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/radioGroupLeave"
android:gravity="center"
android:text="@string/parkalertparamstime"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/waittimetext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/timePickerLeave"
android:layout_centerHorizontal="true"
android:text="@string/waittime"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Spinner
android:id="@+id/spinner1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/waittimetext" />
</RelativeLayout>
</ScrollView>
</RelativeLayout>
这是使用它的 Activity 中的 onCreate() 方法：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.leaveparamslayout);
c=getApplicationContext();
for (int i=0;i<16;i++){
oneto15.add(i,i);
}
bundle=getIntent().getExtras();
username=bundle.getString("username");
hereRadioButtonBoolean=(RadioGroup)findViewById(R.id.radioGroupLeave);//existe
parkadress=(EditText)findViewById(R.id.parkalertadress);//existe
picker=(TimePicker)findViewById(R.id.timePickerLeave);//existe
spinner=(Spinner)findViewById(R.id.spinner1);//existe
textToHide=(TextView)findViewById(R.id.parkalertsparamsadress);//existe
send=(Button)findViewById(R.id.sendparkalertbutton);//existe
ocultarBotones();
hereRadioButtonBoolean.check(R.id.radioleave0);
rbno=(RadioButton)findViewById(R.id.radioleave1);
LocationManager locationManager;
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
5000, 0, this);
lastKnownLocation = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
rbno.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked==true){
mostrarBotones();
}else{
ocultarBotones();
parkadress.setText("");
}
}
});
ArrayAdapter adapter=new ArrayAdapter(c, 0, oneto15);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setSelection(0);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
minsToWait=Integer.parseInt(arg0.getItemAtPosition(arg2).toString());
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
send.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Calendar today = Calendar.getInstance();
today.set(Calendar.MILLISECOND, 0);
today.set(Calendar.SECOND, 0);
today.set(Calendar.MINUTE, 0);
today.set(Calendar.HOUR_OF_DAY, 0);
hoyalasdoce=today.getTimeInMillis();
horas=picker.getCurrentHour();
minutos=picker.getCurrentMinute();
try {
parkdate=new SimpleDateFormat("dd/MM/yyyy").parse(String.valueOf(horas)+String.valueOf(minutos));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
parklong=parkdate.getTime()+hoyalasdoce;
if(rbno.isChecked()){
parsearDireccion(parkadress.getText().toString());
if(lat==0){
Toast toast=Toast.makeText(c, getString(R.string.badparse), Toast.LENGTH_LONG);
toast.show();
haveAdress=false;
}else{
haveAdress=true;
}
}else{
if(lastKnownLocation!=null){
lat=lastKnownLocation.getLatitude();
lon=lastKnownLocation.getLongitude();
}else{
dialog = ProgressDialog.show(c, "Buscando...", "");
handler = new Handler() {
@Override
public void handleMessage(Message msg) {
Log.i("Location", "Mensaje recibido");
if(dialog!=null){
Log.i("Location", "dialog no es null");
dialog.dismiss();
}
Log.i("Location", "Coordenadas recibidas en el handler: Longitud: "+msg.getData().getDouble("lat")+" Latitud: "+msg.getData().getDouble("lon"));
LatLng parkspot = new LatLng(msg.getData().getDouble("lat"),
msg.getData().getDouble("lon"));
}
};
}
}
Thread thread=new Thread(){
public void run(){
urlsend=getString(R.string.host)+getString(R.string.namespace)+getString(R.string.urlsendpark);
params.clear();
params.add(new BasicNameValuePair("lat", String.valueOf(lat)));
params.add(new BasicNameValuePair("lon", String.valueOf(lon)));
params.add(new BasicNameValuePair("time", String.valueOf(parklong)));
params.add(new BasicNameValuePair("wait", String.valueOf(minsToWait)));
try {
CustomHttpClient.executeHttpPost(urlsend, params);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
}
});
}
调用此 Activity 时，我收到此堆栈跟踪：
09-09 17:12:19.621: E/AndroidRuntime(10627): FATAL EXCEPTION: main
09-09 17:12:19.621: E/AndroidRuntime(10627): android.content.res.Resources$NotFoundException: Resource ID #0x0
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.content.res.Resources.getValue(Resources.java:1018)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.content.res.Resources.loadXmlResourceParser(Resources.java:2105)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.content.res.Resources.getLayout(Resources.java:857)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:371)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:192)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.Spinner.onMeasure(Spinner.java:289)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:599)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1163)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.FrameLayout.onMeasure(FrameLayout.java:297)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.ScrollView.onMeasure(ScrollView.java:312)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:599)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:381)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4802)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.FrameLayout.onMeasure(FrameLayout.java:297)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4802)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1385)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.LinearLayout.measureVertical(LinearLayout.java:676)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.LinearLayout.onMeasure(LinearLayout.java:557)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4802)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.widget.FrameLayout.onMeasure(FrameLayout.java:297)
09-09 17:12:19.621: E/AndroidRuntime(10627): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2111)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.View.measure(View.java:12881)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.os.Handler.dispatchMessage(Handler.java:99)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.os.Looper.loop(Looper.java:137)
09-09 17:12:19.621: E/AndroidRuntime(10627): at android.app.ActivityThread.main(ActivityThread.java:4441)
09-09 17:12:19.621: E/AndroidRuntime(10627): at java.lang.reflect.Method.invokeNative(Native Method)
09-09 17:12:19.621: E/AndroidRuntime(10627): at java.lang.reflect.Method.invoke(Method.java:511)
09-09 17:12:19.621: E/AndroidRuntime(10627): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
09-09 17:12:19.621: E/AndroidRuntime(10627): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
09-09 17:12:19.621: E/AndroidRuntime(10627): at dalvik.system.NativeStart.main(Native Method)
stacktrace 提到了 Spinner，所以错误可能在那里，但我不知道究竟在哪里。所有资源都存在。
有指南吗？谢谢你。