我有四个活动使用单个适配器来显示微调器。调用适配器时，其中2个活动正常，但其中2个崩溃。给 ArrayIndexOutOfBoundsException：length = 10; index = 10错误。
这是代码
此活动不会崩溃并完美显示微调器及其项目
public class ArcherTowerActivity extends AppCompatActivity {
Spinner sp1;
Spinner sp2;
Spinner sp3;
Spinner sp4;
Spinner sp5;
Spinner sp6;
Spinner sp7;
Spinner sp8;
TextView tx;
Button sbmt;
String levels[]={"Level 1",
"Level 2",
"Level 3",
"Level 4",
"Level 5",
"Level 6",
"Level 7",
"Level 8",
"Level 9",
"Level 10",
"Level 11",
"Level 12",
"Level 13",
"Level 14",};
int[] images={
R.drawable.archer_tower1,
R.drawable.archer_tower2,
R.drawable.archer_tower3,
R.drawable.archer_tower4,
R.drawable.archer_tower5,
R.drawable.archer_tower6,
R.drawable.archer_tower7,
R.drawable.archer_tower8,
R.drawable.archer_tower9,
R.drawable.archer_tower10,
R.drawable.archer_tower11,
R.drawable.archer_tower12,
R.drawable.archer_tower13,
R.drawable.archer_tower14,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_archer_tower);
sbmt=(Button)findViewById(R.id.submit);
tx=(TextView)findViewById(R.id.upgradeResult);
sp1=(Spinner)findViewById(R.id.spinner);
sp2=(Spinner)findViewById(R.id.spinner1);
sp3=(Spinner)findViewById(R.id.spinner2);
sp4=(Spinner)findViewById(R.id.spinner3);
sp5=(Spinner)findViewById(R.id.spinner4);
sp6=(Spinner)findViewById(R.id.spinner5);
sp7=(Spinner)findViewById(R.id.spinner6);
sp8=(Spinner)findViewById(R.id.spinner7);
SpinnerAdapter adapter=new SpinnerAdapter(this,levels,images);
sp1.setAdapter(adapter);
sp2.setAdapter(adapter);
sp3.setAdapter(adapter);
sp4.setAdapter(adapter);
sp5.setAdapter(adapter);
sp6.setAdapter(adapter);
sp7.setAdapter(adapter);
sp8.setAdapter(adapter);
此活动无法执行此操作
public class MortarActivity extends AppCompatActivity {
Spinner sp1;
Spinner sp2;
Spinner sp3;
Spinner sp4;
TextView tx;
Button sbmt;
String levels[]={"Level 1",
"Level 2",
"Level 3",
"Level 4",
"Level 5",
"Level 6",
"Level 7",
"Level 8",
"Level 9",
"Level 10",
};
int[] images={
R.drawable.mortar1,
R.drawable.mortar2,
R.drawable.mortar3,
R.drawable.mortar4,
R.drawable.mortar5,
R.drawable.mortar6,
R.drawable.mortar7,
R.drawable.mortar8,
R.drawable.mortar9,
R.drawable.mortar10,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mortar);
sbmt=(Button)findViewById(R.id.submit);
tx=(TextView)findViewById(R.id.upgradeResult);
sp1=(Spinner)findViewById(R.id.spinner);
sp2=(Spinner)findViewById(R.id.spinner1);
sp3=(Spinner)findViewById(R.id.spinner2);
sp4=(Spinner)findViewById(R.id.spinner3);
SpinnerAdapter adapter=new SpinnerAdapter(this,levels,images);
sp1.setAdapter(adapter);
sp2.setAdapter(adapter);
sp3.setAdapter(adapter);
sp4.setAdapter(adapter);
这是适配器代码
public class SpinnerAdapter extends ArrayAdapter <String>{
Context c;
String[] levels;
int[] images;
public SpinnerAdapter(Context ctx,String[] levels, int[] images){
super(ctx,R.layout.spinner_building_to_upgrade,levels);
this.c=ctx;
this.images=images;
this.levels=levels;
}
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent) {
if(convertView==null){
LayoutInflater inflater=(LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView=inflater.inflate(R.layout.spinner_building_to_upgrade,null);
}
TextView tx=(TextView) convertView.findViewById(R.id.levelNumber);
ImageView image=(ImageView)convertView.findViewById(R.id.imageid);
//SET DATA
tx.setText(levels[position]);
image.setImageResource(images[position]);
return convertView;
}
@NonNull
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null){
LayoutInflater inflater=(LayoutInflater) c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView=inflater.inflate(R.layout.spinner_building_to_upgrade,null);
}
TextView tx=(TextView) convertView.findViewById(R.id.levelNumber);
ImageView image=(ImageView)convertView.findViewById(R.id.imageid);
//SET DATA
tx.setText(levels[position]);
image.setImageResource(images[position]);
return convertView;
}
}
First Activity有14个项目，Second Activity有10个项目。第二个崩溃给出了java.lang.ArrayIndexOutOfBoundsException：length = 10; index = 10错误。
编辑：
我已经找到了问题，如果我在阵列适配器中输入小于10的项目，它会崩溃并给出错误。为什么会这样？因为我没有设置任何最大最小长度。我想在微调器适配器中发送8个项目。请帮忙
错误记录
01-11 17:44:51.066 19769-19769/com.curtztech.android.clashmate E/dalvikvm: Could not find class 'android.widget.ThemedSpinnerAdapter', referenced from method android.support.v7.widget.AppCompatSpinner$DropDownAdapter.<init>
01-11 17:44:51.206 19769-19769/com.curtztech.android.clashmate E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.curtztech.android.clashmate, PID: 19769
java.lang.ArrayIndexOutOfBoundsException: length=10; index=10
at com.curtztech.android.clashmate.SpinnerAdapter.getView(SpinnerAdapter.java:74)
at android.widget.Spinner.makeView(Spinner.java:592)
at android.widget.Spinner.layout(Spinner.java:540)
at android.widget.Spinner.onLayout(Spinner.java:502)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.GridLayout.onLayout(GridLayout.java:1183)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:435)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14834)
at android.view.ViewGroup.layout(ViewGroup.java:4635)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:1983)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1740)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:996)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5600)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:544)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5095)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
at dalvik.system.NativeStart.main(Native Method)
01-11 17:45:00.036 20127-20127/? E/Zygote: Zygote: error closing descriptor
libcore.io.ErrnoException: close failed: EBADF (Bad file number)
at libcore.io.Posix.close(Native Method)
at libcore.io.BlockGuardOs.close(BlockGuardOs.java:75)
at com.android.internal.os.ZygoteInit.closeServerSocket(ZygoteInit.java:198)
at com.android.internal.os.ZygoteConnection.handleChildProc(ZygoteConnection.java:879)
at com.android.internal.os.ZygoteConnection.runOnce(ZygoteConnection.java:242)
at com.android.internal.os.ZygoteInit.runSelectLoop(ZygoteInit.java:662)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:598)
at dalvik.system.NativeStart.main(Native Method)
01-11 17:45:01.006 1230-2336/? E/ActivityThread: Failed to find provider info for com.android.settings.applications.SpProvider
01-11 17:45:01.006 20160-20160/? E/Zygote: Zygote: error closing descriptor
libcore.io.ErrnoException: close failed: EBADF (Bad file number)
at libcore.io.Posix.close(Native Method)
at libcore.io.BlockGuardOs.close(BlockGuardOs.java:75)
at com.android.internal.os.ZygoteInit.closeServerSocket(ZygoteInit.java:198)
at com.android.internal.os.ZygoteConnection.handleChildProc(ZygoteConnection.java:879)
at com.android.internal.os.ZygoteConnection.runOnce(ZygoteConnection.java:242)
at com.android.internal.os.ZygoteInit.runSelectLoop(ZygoteInit.java:662)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:598)
at dalvik.system.NativeStart.main(Native Method)
01-11 17:45:57.236 1230-2340/? E/ActivityThread: Failed to find provider info for com.android.settings.applications.SpProvider
01-11 17:45:57.286 1230-1240/? E/ActivityThread: Failed to find provider info for com.android.settings.applications.SpProvider
01-11 17:46:37.266 1230-1742/? E/LocSvc_ApiV02: E/virtual loc_api_adapter_err LocApiV02::setXtraData(char*, int):1117]: failed status = eLOC_CLIENT_SUCCESS, inject_pos_ind.status = eQMI_LOC_GENERAL_FAILURE_V02, part num = 25, ind.partNum = 0
答案 0 :(得分：1)
实施此方法;
@Override
public int getCount() {
return levels.length;
}