相同的适配器在加载12-14项时工作正常，但在加载少于10项时会出错。
当我输入6个项目时导致错误= ArrayIndexOutOfBoundsException：length = 6; index = 6
public class SpinnerAdapterAirSweeper extends ArrayAdapter <String>{
Context c;
String[] levels;
int[] images;
public SpinnerAdapterAirSweeper(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
// if (levels.length > position) {
tx.setText(levels[position]);
// }
// if (images.length > position) {
image.setImageResource(images[position]);
// }
// 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
// if (levels.length > position) {
tx.setText(levels[position]);
// }
// if (images.length > position) {
image.setImageResource(images[position]);
// }
// tx.setText(levels[position]);
// image.setImageResource(images[position]);
return convertView;
}
@Override
public int getItemViewType(int position) {
return super.getItemViewType(position);
}
}
请向我提供解决方案，并附上修正此代码的代码。早先这个适配器工作正常。感谢
编辑： 这就是我将值传递给适配器
的方法public class AirSweeperActivity extends AppCompatActivity {
static int airSweeperLevelOne=22500;
static int airSweeperLevelTwo=90000;
static int airSweeperLevelThree=270000;
static int airSweeperLevelFour=540000;
static int airSweeperLevelFive=1080000;
static int airSweeperLevelSix=2160000;
int sp1AirSweeperUpgradeCost;
int sp2AirSweeperUpgradeCost;
long totalAirSweeperUpgradeCost;
Spinner sp1;
Spinner sp2;
TextView tx;
Button sbmt;
String levels[]={"Level 1",
"Level 2",
"Level 3",
"Level 4",
"Level 5",
"Level 6",
};
int[] images={
R.drawable.air_sweeper1,
R.drawable.air_sweeper2,
R.drawable.air_sweeper3,
R.drawable.air_sweeper4,
R.drawable.air_sweeper5,
R.drawable.air_sweeper6,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_air_sweeper);
sbmt = (Button) findViewById(R.id.submit);
tx = (TextView) findViewById(R.id.upgradeResult);
sp1 = (Spinner) findViewById(R.id.spinner);
sp2 = (Spinner) findViewById(R.id.spinner1);
SpinnerAdapterAirSweeper adapter = new SpinnerAdapterAirSweeper(this, levels, images);
sp1.setAdapter(adapter);
sp2.setAdapter(adapter);
sp1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
SharedPreferences sharedPreferences = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
prefs.edit().putInt("spinner1_indx", sp1.getSelectedItemPosition()).apply(); //TO RETRIEVE SPINNER 1 ON RESUME
switch (position) {
case 0:
sp1AirSweeperUpgradeCost = (airSweeperLevelTwo + airSweeperLevelThree + airSweeperLevelFour + airSweeperLevelFive +
airSweeperLevelSix );
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
case 1:
sp1AirSweeperUpgradeCost = (airSweeperLevelThree + airSweeperLevelFour + airSweeperLevelFive +
airSweeperLevelSix );
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
case 2:
sp1AirSweeperUpgradeCost = (airSweeperLevelFour + airSweeperLevelFive +
airSweeperLevelSix);
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
case 3:
sp1AirSweeperUpgradeCost = (airSweeperLevelFive +
airSweeperLevelSix );
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
case 4:
sp1AirSweeperUpgradeCost = (
airSweeperLevelSix );
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
case 5:
sp1AirSweeperUpgradeCost = (0);
editor.putInt("sp1_Air_Defence", sp1AirSweeperUpgradeCost);
editor.apply();
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
答案 0 :(得分：0)
这不是关于价值的尝试。你在这里添加了额外的逗号
String levels[]={"Level 1",
"Level 2",
"Level 3",
"Level 4",
"Level 5",
"Level 6"
};
int[] images={
R.drawable.air_sweeper1,
R.drawable.air_sweeper2,
R.drawable.air_sweeper3,
R.drawable.air_sweeper4,
R.drawable.air_sweeper5,
R.drawable.air_sweeper6
};