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问题描述
我很茫然为什么我收到一个 ArrayIndexOutOfBoundsException异常。请帮我追查。
下面的错误：
了java.lang.RuntimeException：无法启动活动
ComponentInfo {es.team.wifi / es.team.wifi.WifiList}：
java.lang.ArrayIndexOutOfBoundsException：长度= 1;索引= 1
在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2081）
在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2106）
在android.app.ActivityThread.access $ 700（ActivityThread.java:134）
下面是我的活动：
公共类WifiList扩展活动实现OnItemClickListener { 私人元素[]网; 私有静态WifiManager manWifi; 私有静态列表＆LT; ScanResult＆GT; wifiList; @燮pressWarnings（{静态接入，德precation}） 公共无效的onCreate（包savedInstanceState）{ super.onCreate（savedInstanceState）; requestWindowFeature（Window.FEATURE_NO_TITLE）; getWindow（）。setFlags（ WindowManager.LayoutParams.FLAG_FULLSCREEN， WindowManager.LayoutParams.FLAG_FULLSCREEN）; this.setRequestedOrientation（ActivityInfo.SCREEN_ORIENTATION_PORTRAIT）; this.manWifi =（WifiManager）getSystemService（Context.WIFI_SERVICE）; 如果（this.manWifi.isWifiEnabled（）==真）{ Toast.makeText（这一点，Capturando REDES ......，Toast.LENGTH_LONG）.show（）; this.wifiList = this.manWifi.getScanResults（）; this.nets =新的元素[wifiList.size（）]; 的for（int i = 0; I＆LT; wifiList.size（）;我++）{ 字符串项= wifiList.get（I）的ToString（）; 串[] vector_item = item.split（，）; 串item_essid = vector_item [0]; 串item_capabilities = vector_item [2]; 串item_level = vector_item [3]; 串SSID = item_essid.split（：）[1]; 字符串安全= item_capabilities.split（：）[1]; 字符串功率= item_level.split（：）[1]; 网[我] =新的元素（SSID，安全，电力）; } 的setContentView（R.layout.wifilist）; AdapterElements适配器=新AdapterElements（本）; ListView的网表=（ListView控件）findViewById（R.id.listView1）; netlist.setAdapter（适配器）; netlist.setOnItemClickListener（本）; } 其他 { AlertDialog alertDialog =新AlertDialog.Builder（本）.create（）; alertDialog.setTitle（WIFI）; alertDialog.setMessage（ACTIVAR WIFI？\ NSE NECESITA第CONTINUAR。+ \ñ\ñPOR青睐！\ nPulsa ESCANEAR despues日ACTIVAR。 + \ñ\ñTIEMPO DE ACT：3 Segundos。）; alertDialog.setButton（ACTIVAR，新DialogInterface.OnClickListener（）{ 公共无效的onClick（最终DialogInterface对话，最终诠释它）{ WifiList.manWifi.setWifiEnabled（真正的）; Toast.makeText（WifiList.this.getApplicationContext（）， ACTIVANDO无线..，0）.show（）; 完（）; } }）; alertDialog.setButton2（CANCELAR，新DialogInterface.OnClickListener（）{ 公共无效的onClick（最终DialogInterface对话，最终诠释它）{ Toast.makeText（WifiList.this.getApplicationContext（）， CANCELADO WIFI，0）.show（）; 完（）; } }）; alertDialog.setIcon（R.drawable.alert）; alertDialog.show（）; //完（）; } } 类AdapterElements扩展ArrayAdapter＆LT;对象＆gt; { 活动范围内; 公共AdapterElements（活动范围内）{ 超（背景下，R.layout.elements，网络）; this.context =背景; } 公共查看getView（INT位置，查看convertView，ViewGroup中父）{ LayoutInflater充气= context.getLayoutInflater（）; 查看项目= inflater.inflate（R.layout.elements，NULL）; TextView的lblTitle =（TextView中）item.findViewById（R.id.str_ssid）; lblTitle.setText（网[位置] .getSSID（））; TextView的lblSubtitle =（TextView中）item.findViewById（R.id.str_security）; lblSubtitle.setText（网[位置] .getSecurity（））; ImageView的imgPower =（ImageView的）item.findViewById（R.id.img_signal）; 字符串cad_pwr =网[位置] .getPower（）分裂（）[1]的ToString（）。 整数PWR =的Integer.parseInt（cad_pwr）; 如果（PWR＆GT; = -70）{ imgPower.setImageResource（R.drawable.wsignal4）; } 否则如果（（PWR＆所述; -71）及及（PWR＆GT; = -80））{ imgPower.setImageResource（R.drawable.wsignal3）; } 否则如果（（PWR＆所述; 81）及及（PWR＆GT; = 85））{ imgPower.setImageResource（R.drawable.wsignal2）; } 其他 { imgPower.setImageResource（R.drawable.wsignal1）; } 归还物品）; } } 公共无效onItemClick（适配器视图＆LT;＆GT; AV，视图V，INT位置，长ARG3）{ @燮pressWarnings（静态访问） 字符串项= this.wifiList.get（位置）的ToString（）; 串[] vector_item = item.split（，）; 串item_ssid = vector_item [0]; 串item_bssid = vector_item [1]; 串item_capabilities = vector_item [2]; 串item_level = vector_item [3]; 串item_frecuency = vector_item [4]; 串SSID = item_ssid.split（：）[1] .substring（1）; 串BSSID = item_bssid.substring（7）.split（）[1]; 串sec_aux = item_capabilities.split（：）[1]; 字符串安全= NULL; 如果（sec_aux.equals（））{ 安全=无安全性; } 其他 { 安全= item_capabilities.split（：）[1] .split（]）[0] .substring（2）; 如果（security.contains（ - ））{ System.out.println("&&&&&&&&&&&&&&&&&&&&&& Contiene - ）; 串P0 = security.split（ - ）[0]; 串P1 = security.split（ - ）[1]; 安全= P0 ++ P1; } } 串级= item_level.split（：）[1] .split（）[1]; 串frecuency = item_frecuency.split（：）[1] .split（）[1]; // Creamos意图努埃瓦 意图wifiinfo =新的意图（这一点，WifiInfo.class）; wifiinfo.putExtra（SSID，SSID）; wifiinfo.putExtra（BSSID，BSSID）; wifiinfo.putExtra（安全，安全性）; wifiinfo.putExtra（权力，水平）; wifiinfo.putExtra（frecuency，frecuency）; startActivity（wifiinfo）; }} 解决方案
它的困难没有你的code，但长度为1的阵列，索引1是无效的。试着指数0。
I am at a loss for why I'm receiving an ArrayIndexOutOfBoundsException. Please help me track it down.
Here's the error:
java.lang.RuntimeException: Unable to start activity
ComponentInfo{es.team.wifi/es.team.wifi.WifiList}:
java.lang.ArrayIndexOutOfBoundsException: length=1; index=1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2081)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2106)
at android.app.ActivityThread.access$700(ActivityThread.java:134)
Here's my activity:
public class WifiList extends Activity implements OnItemClickListener {
private Element[] nets;
private static WifiManager manWifi;
private static List<ScanResult> wifiList;
@SuppressWarnings({ "static-access", "deprecation" })
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
this.manWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if (this.manWifi.isWifiEnabled()==true) {
Toast.makeText(this, "Capturando REDES...", Toast.LENGTH_LONG).show();
this.wifiList = this.manWifi.getScanResults();
this.nets = new Element[wifiList.size()];
for(int i = 0; i < wifiList.size(); i++){
String item = wifiList.get(i).toString();
String[] vector_item = item.split(",");
String item_essid = vector_item[0];
String item_capabilities = vector_item[2];
String item_level = vector_item[3];
String ssid = item_essid.split(":")[1];
String security = item_capabilities.split(":")[1];
String power = item_level.split(":")[1];
nets[i]=new Element(ssid, security, power);
}
setContentView(R.layout.wifilist);
AdapterElements adapter = new AdapterElements(this);
ListView netlist = (ListView)findViewById(R.id.listView1);
netlist.setAdapter(adapter);
netlist.setOnItemClickListener(this);
}
else {
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle(" WIFI ");
alertDialog.setMessage(" ACTIVAR WIFI ? \nSE NECESITA para CONTINUAR." +
"\n \n POR FAVOR !\nPulsa ESCANEAR despues de ACTIVAR." +
"\n \n TIEMPO DE ACT. : 3 Segundos.");
alertDialog.setButton("ACTIVAR", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int which) {
WifiList.manWifi.setWifiEnabled(true);
Toast.makeText(WifiList.this.getApplicationContext(),
"ACTIVANDO WiFi..",0).show();
finish();
}
});
alertDialog.setButton2("CANCELAR", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int which) {
Toast.makeText(WifiList.this.getApplicationContext(),
"CANCELADO WIFI",0).show();
finish();
}
});
alertDialog.setIcon(R.drawable.alert);
alertDialog.show();
//finish();
}
}
class AdapterElements extends ArrayAdapter<Object> {
Activity context;
public AdapterElements(Activity context) {
super(context, R.layout.elements, nets);
this.context = context;
}
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View item = inflater.inflate(R.layout.elements, null);
TextView lblTitle = (TextView)item.findViewById(R.id.str_ssid);
lblTitle.setText(nets[position].getSSID());
TextView lblSubtitle = (TextView)item.findViewById(R.id.str_security);
lblSubtitle.setText(nets[position].getSecurity());
ImageView imgPower = (ImageView)item.findViewById(R.id.img_signal);
String cad_pwr = nets[position].getPower().split(" ")[1].toString();
Integer pwr = Integer.parseInt(cad_pwr);
if (pwr >= -70){
imgPower.setImageResource(R.drawable.wsignal4);
}
else if ((pwr < -71) && (pwr >= -80)){
imgPower.setImageResource(R.drawable.wsignal3);
}
else if ((pwr < 81) && (pwr >= 85)){
imgPower.setImageResource(R.drawable.wsignal2);
}
else {
imgPower.setImageResource(R.drawable.wsignal1);
}
return(item);
}
}
public void onItemClick(AdapterView<?> av, View v, int position, long arg3) {
@SuppressWarnings("static-access")
String item = this.wifiList.get(position).toString();
String[] vector_item = item.split(",");
String item_ssid = vector_item[0];
String item_bssid = vector_item[1];
String item_capabilities = vector_item[2];
String item_level = vector_item[3];
String item_frecuency = vector_item[4];
String ssid = item_ssid.split(":")[1].substring(1);
String bssid = item_bssid.substring(7).split(" ")[1];
String sec_aux = item_capabilities.split(":")[1];
String security=null;
if (sec_aux.equals(" ")) {
security="No Security";
} else {
security = item_capabilities.split(":")[1].split("]")[0].substring(2);
if (security.contains("-")){
System.out.println("&&&&&&&&&&&&&&&&&&&&&& Contiene -");
String p0 = security.split("-")[0];
String p1 = security.split("-")[1];
security = p0 + " " + p1;
}
}
String level = item_level.split(":")[1].split(" ")[1];
String frecuency = item_frecuency.split(":")[1].split(" ")[1];
//Creamos Intent nueva
Intent wifiinfo = new Intent(this, WifiInfo.class);
wifiinfo.putExtra("ssid", ssid);
wifiinfo.putExtra("bssid", bssid);
wifiinfo.putExtra("security", security);
wifiinfo.putExtra("power", level);
wifiinfo.putExtra("frecuency", frecuency);
startActivity(wifiinfo);
}
}
解决方案
Its difficult without your code, but for array of length 1, index 1 is not valid. Try index 0.
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