我在Android Studio中遇到此错误：
09-30 14:50:54.929 1698-1698/inco.aplicacion.safrapp.indecipherablecode D/dalvikvm﹕ Not late-enabling CheckJNI (already on)
09-30 14:50:55.080 1698-1698/inco.aplicacion.safrapp.indecipherablecode E/Trace﹕ error opening trace file: No such file or directory (2)
09-30 14:50:56.410 1698-1698/inco.aplicacion.safrapp.indecipherablecode D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
09-30 14:51:03.880 1698-1702/inco.aplicacion.safrapp.indecipherablecode D/dalvikvm﹕ GC_CONCURRENT freed 140K, 3% free 11005K/11271K, paused 23ms+55ms, total 107ms
09-30 15:12:06.719 1783-1783/inco.aplicacion.safrapp.indecipherablecode E/Trace﹕ error opening trace file: No such file or directory (2)
09-30 15:12:11.739 1783-1783/inco.aplicacion.safrapp.indecipherablecode D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
09-30 15:12:19.570 1783-1788/inco.aplicacion.safrapp.indecipherablecode D/dalvikvm﹕ GC_CONCURRENT freed 147K, 3% free 11002K/11271K, paused 30ms+26ms, total 131ms
09-30 15:12:19.590 1783-1783/inco.aplicacion.safrapp.indecipherablecode D/AndroidRuntime﹕ Shutting down VM
09-30 15:12:19.590 1783-1783/inco.aplicacion.safrapp.indecipherablecode W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb2f1b288)
09-30 15:12:19.620 1783-1783/inco.aplicacion.safrapp.indecipherablecode E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{inco.aplicacion.safrapp.indecipherablecode/inco.aplicacion.safrapp.indecipherablecode.javacrear}: java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=1
at java.lang.String.startEndAndLength(String.java:593)
at java.lang.String.substring(String.java:1474)
at inco.aplicacion.safrapp.indecipherablecode.javacrear.CREARCODIGO(javacrear.java:61)
at inco.aplicacion.safrapp.indecipherablecode.javacrear.onCreate(javacrear.java:18)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
09-30 15:15:37.013 1835-1835/inco.aplicacion.safrapp.indecipherablecode E/Trace﹕ error opening trace file: No such file or directory (2)
09-30 15:15:37.873 1835-1835/inco.aplicacion.safrapp.indecipherablecode D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
09-30 15:16:11.533 1835-1840/inco.aplicacion.safrapp.indecipherablecode D/dalvikvm﹕ GC_CONCURRENT freed 145K, 3% free 11005K/11271K, paused 17ms+45ms, total 91ms
09-30 15:16:11.563 1835-1835/inco.aplicacion.safrapp.indecipherablecode D/AndroidRuntime﹕ Shutting down VM
09-30 15:16:11.563 1835-1835/inco.aplicacion.safrapp.indecipherablecode W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb2f1b288)
09-30 15:16:11.584 1835-1835/inco.aplicacion.safrapp.indecipherablecode E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{inco.aplicacion.safrapp.indecipherablecode/inco.aplicacion.safrapp.indecipherablecode.javacrear}: java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=1
at java.lang.String.startEndAndLength(String.java:593)
at java.lang.String.substring(String.java:1474)
at inco.aplicacion.safrapp.indecipherablecode.javacrear.CREARCODIGO(javacrear.java:61)
at inco.aplicacion.safrapp.indecipherablecode.javacrear.onCreate(javacrear.java:18)
at android.app.Activity.performCreate(Activity.java:5008)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access$600(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
09-30 15:17:34.594 1908-1908/inco.aplicacion.safrapp.indecipherablecode E/Trace﹕ error opening trace file: No such file or directory (2)
09-30 15:17:35.447 1908-1908/inco.aplicacion.safrapp.indecipherablecode D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
09-30 15:18:07.294 1956-1956/inco.aplicacion.safrapp.indecipherablecode E/Trace﹕ error opening trace file: No such file or directory (2)
09-30 15:18:08.095 1956-1956/inco.aplicacion.safrapp.indecipherablecode D/gralloc_goldfish﹕ Emulator without GPU emulation detected.
即使我收到该消息，该应用程序仍然在模拟器中运行，并且在我的应用程序的第一个布局中有三个按钮，如果我按下特定按钮，它将崩溃。类的代码（尚未完成）：
package inco.aplicacion.safrapp.indecipherablecode;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import org.w3c.dom.Text;
/**
* Created by SAFR on 9/29/2014.
*/
public class javacrear extends java0 {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.disecrear);
CREARCODIGO();
}
/**
* CREAR CODIGO:
*/
private void CREARCODIGO() {
EditText CODIGO = (EditText) findViewById(R.id.CODIGO);
EditText CODIGONUMERO = (EditText) findViewById(R.id.CODIGONUMERO);
TextView CREADO = (TextView) findViewById(R.id.CREADO);
Button CREAR = (Button) findViewById(R.id.CREAR);
String A, A1, A2;
A1 = "";
String AL[] = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};
A = CODIGO.getText().toString();
A2 = A;
int B, X1, X2, X3, X4, V, CONTADO, X, Y;
X = 0;
Y = 1;
B = A.length();
V = 0;
/**
* DIVISION DEL TEXTO:
*/
if (B <= 10) {
V = 2;
} else if (B > 10 && B <= 20) {
V = 6;
} else if (B > 20 && B <= 30) {
V = 10;
} else if (B > 30 && B <= 40) {
V = 14;
} else if (B > 40 && B <= 50) {
V = 18;
} else if (B > 50) {
V = 22;
}
A = A.toUpperCase();
/** ENCRIPTAMIENTO: */
for (CONTADO = 0; CONTADO == B; CONTADO++) {
if (A.substring(X, Y).equals(AL[1])) {
int ZZZ = 1;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[2])) {
int ZZZ = 2;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[3])) {
int ZZZ = 3;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[4])) {
int ZZZ = 4;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[5])) {
int ZZZ = 5;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[6])) {
int ZZZ = 6;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[7])) {
int ZZZ = 7;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[8])) {
int ZZZ = 8;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[9])) {
int ZZZ = 9;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[10])) {
int ZZZ = 10;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[11])) {
int ZZZ = 11;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[12])) {
int ZZZ = 12;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[13])) {
int ZZZ = 13;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[14])) {
int ZZZ = 14;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[15])) {
int ZZZ = 15;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[16])) {
int ZZZ = 16;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[17])) {
int ZZZ = 17;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[18])) {
int ZZZ = 18;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[19])) {
int ZZZ = 19;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[20])) {
int ZZZ = 20;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[21])) {
int ZZZ = 21;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[22])) {
int ZZZ = 22;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[23])) {
int ZZZ = 23;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[24])) {
int ZZZ = 24;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[25])) {
int ZZZ = 25;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
} else if (A.substring(X, Y).equals(AL[26])) {
int ZZZ = 26;
ZZZ = ZZZ + V;
A1 = AL[ZZZ];
A2 = A2 + A1;
X = X + 1;
Y = Y + 1;
}
}
CREAR.setText(A2);
}
}
答案 0 :(得分：0)
我看到很多问题：
for (CONTADO = 0; CONTADO == B; CONTADO++)应该有<条件，而不是==。A.substring(X, Y).equals(AL[1])此检查从1开始，一直到26。您将获得ArrayOutOfBoundException。A.substring(X, Y).equals(AL[1])中，因为您要尝试匹配字符串A的每个字符，那么为什么不使用toCharArray()将其转换为char []。if区内，您在尝试什么：int ZZZ = 1; ZZZ = ZZZ + V; // This will give ArrayOutOfBoundException if value of ZZZ is greater then 25. A1 = AL[ZZZ];
A2 = A2 + A1;你正在使用大量内存（字符串附加总是一个坏主意）。