此代码给出错误说:“错误接收广播意图在活动” 我无法找到任何eroors虽然...........任何想法? 我已经添加了循环条件七,我只希望前七个扫描结果奇怪的Android程序错误
class WifiReceiver extends BroadcastReceiver {
public void onReceive(Context con, Intent intent) {
sb = new StringBuilder();
wifiList = mainWifi.getScanResults();
for(int i = 0; i < wifiList.size(); i++)
{
sb.append((wifiList.get(i)).SSID.toString());
sb.append(' ');
sb.append('!');
sb.append("\n\n");
}
String net = sb.toString();
if(wifiList.size() > 0)
{
char excl = '!';
int excl1 = excl;
String[] aray = null;
for(int j = 0; j<7; j++)
{
int index = net.indexOf(excl1);
String a = net.substring(0, index);
aray[j] = a;
String temp = net.substring(index+1);
net = temp;
}
String one = aray[0];
String two = aray[1];
String three = aray[2];
String four = aray[3];
String five = aray[4];
String six = aray[5];
String seven = aray[7];
tv1.setText(one);
}
else
{
tv1.setText("No Networks Detected");
}
}
}
PS:我只加入一个TextView的,因为这是一个测试模块
你有没有在android清单中声明BroadcastReceiver? – Jeshurun
@Jeshurun ...是的,我做过 –
必须通过这段代码?它抛出一个运行时错误,如列表索引超出界限或空异常吗? –