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[英]Reading Excel file using poi and storing in multi-dimensional array doesn't bring all the data in Java
[英]ArrayIndexOutofBoundException - Java - Android - Receiving streaming data and storing in multi-dimensional array Java
我通过蓝牙实时接收30000个字符串,大约每秒1000个。 我将数据解析为双精度并试图将30000个数据点存储到多维array[30000][1]
但是,当我运行Android应用程序时,由于ArrayIndexOutofBoundException
,在经过几点后崩溃。
我确实意识到这可以在单个数组中完成,但最终我会增加数组的宽度。
存储的数组大小= [30000][1]
转换的数组大小= [1]
蓝牙聊天
case MESSAGE_READ:
for (int a = 0; a < 30000; a++) {
byte[] readBuf = (byte[]) msg.obj;
try {
String readMessage = new String(readBuf, 0, msg.arg1);
mConversationArrayAdapter.add("Voltage: " + readMessage);
double[] convert = new double[1];
for (int z = 0; z < 1; z++) {
convert[z] = Double.parseDouble(readMessage);
}
for (int j = 0; j < 1; j++) {
stored[a][j] = convert[a];
}
} catch (NumberFormatException e) {
System.err.println("NumberFormatException: " + e.getMessage());
}
}
finalValue = new HjorthClass(stored);
if (finalValue.returnSum() == true) {
seizureResult.setText("A Seizure has been detected");
}
break;
logcat;
04-04 22:44:17.406: E/AndroidRuntime(14619): FATAL EXCEPTION: main
04-04 22:44:17.406: E/AndroidRuntime(14619): java.lang.ArrayIndexOutOfBoundsException
04-04 22:44:17.406: E/AndroidRuntime(14619): at com.example.android.BluetoothChat.BluetoothChat$2.handleMessage(BluetoothChat.java:311)
04-04 22:44:17.406: E/AndroidRuntime(14619): at android.os.Handler.dispatchMessage(Handler.java:99)
04-04 22:44:17.406: E/AndroidRuntime(14619): at android.os.Looper.loop(Looper.java:130)
04-04 22:44:17.406: E/AndroidRuntime(14619): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-04 22:44:17.406: E/AndroidRuntime(14619): at java.lang.reflect.Method.invokeNative(Native Method)
04-04 22:44:17.406: E/AndroidRuntime(14619): at java.lang.reflect.Method.invoke(Method.java:507)
04-04 22:44:17.406: E/AndroidRuntime(14619): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-04 22:44:17.406: E/AndroidRuntime(14619): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-04 22:44:17.406: E/AndroidRuntime(14619): at dalvik.system.NativeStart.main(Native Method)
首先,您声明大小为1的双精度数组。
double[] convert = new double[1];
然后,您尝试调用该数组convert [a] ,其中a可能在0到2999之间,一旦a> 0就会超出范围。
stored[a][j]= convert[a]; // a > 0 ? if yes then out of bounds
有你的错误。 我的猜测是:
stored[a][j]= convert[j];
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