在我的代码中，我正在从两个来源恢复（邀请）Activity，具体取决于我想要将变量RemoteConnectionStepCounter设置为不同的值。为此，我使用不同的键和布尔值。
RemoteConnection.class代码：
package com.stipe.isemergencyrecoveryprocedures;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Html;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import com.stipe.isemergencyrecoveryprocedures.Auxilaries.Actions_done;
import java.lang.annotation.IncompleteAnnotationException;
/**
* Created by estikot on 6.3.2017..
*/
public class RemoteConnection extends AppCompatActivity {
int RemoteConnectionStepCounter = 1;
Button RemoteConnectionButtonYES;
Button RemoteConnectionButtonNO;
Button RemoteConnectionButtonContinue;
TextView RemoteConnectionHeader;
TextView RemoteConnectionStatement;
public static boolean BrowserChecksDone = false;
public static boolean RemoteConnectionYesStep2 = false;
public static boolean RemoteConnectionYesStep3 = false;
boolean IncreaseCounterBy1 = false;
boolean GoToStep5 = false;
//If another management terminal is used, this will be set to true (onNo case 9).
// We are using this in onNo case 8, if this is set to True go to LocalConnection directly
@Override
protected void onCreate(Bundle savedInstances){
super.onCreate(savedInstances);
setContentView(R.layout.remote_connection);
this.RemoteConnectionButtonContinue = (Button) findViewById(R.id.RemoteConnectionButtonCONTINUE);
this.RemoteConnectionButtonNO = (Button) findViewById(R.id.RemoteConnectionButtonNO);
this.RemoteConnectionButtonYES = (Button) findViewById(R.id.RemoteConnectionButtonYES);
this.RemoteConnectionStatement = (TextView) findViewById(R.id.RemoteConnectionStatement);
this.RemoteConnectionHeader= (TextView) findViewById(R.id.RemoteConnectionHeader);
this.showText();
}
@Override
protected void onResume(){
super.onResume();
//If we are cumming back from Browser Checks we need to increase counter by 1 and show text
Bundle bundle = getIntent().getExtras();
if(bundle != null) {
IncreaseCounterBy1 = bundle.getBoolean("BCIncrease");
GoToStep5 = bundle.getBoolean("ChangeStep");
}
if (IncreaseCounterBy1){
RemoteConnectionStepCounter++;
IncreaseCounterBy1 = false;
}
//If we are cumming back from NetworkChecks step8, and we currently see Welcome page, go directly to step 5(Log in to GUI)
if (GoToStep5){
RemoteConnectionStepCounter = 5;
GoToStep5 = false;
}
this.showText();
}
@Override
public void onBackPressed(){
//If there was a jump from step 2 to step 5 onYes, return it from 5 to 2
if ((RemoteConnectionStepCounter == 5) || (RemoteConnectionYesStep2)){
this.RemoteConnectionStepCounter = this.RemoteConnectionStepCounter - 3;
RemoteConnectionYesStep2 = false;
}
//If there was a jump from step 3 to step 5 onYes, return it from 5 to 3
if ((RemoteConnectionStepCounter == 5) || (RemoteConnectionYesStep3)){
this.RemoteConnectionStepCounter = this.RemoteConnectionStepCounter - 2;
RemoteConnectionYesStep3 = false;
}
else this.RemoteConnectionStepCounter --;
if(this.RemoteConnectionStepCounter == 0){
finish();
}
this.showText();
}
public void RemoteConnectionOnContinue(View View) {
switch (this.RemoteConnectionStepCounter) {
case 1: {
this.RemoteConnectionStepCounter++;
this.showText();
break;
}
case 7: {
//If browser checks are done, go to next step (Try logging in again)
if(BrowserChecksDone){
this.RemoteConnectionStepCounter++;
showText();
}
//Go to Browser checks and state that checks are done
else {
Intent intent = new Intent(this, BrowserChecks.class);
startActivity(intent);
}
break;
}
}
}
public void RemoteConnectionOnNo(View VIew){
switch (this.RemoteConnectionStepCounter){
case 2:{
Intent intent = new Intent(this, BrowserChecks.class);
startActivity(intent);
break;
}
case 3:{
RemoteConnectionStepCounter++;
this.showText();
break;
}
case 4:{
//Go to NetworkChecks (Chapter 6)
break;
}
case 5:{
//Forgotten password, go to chapter 11.4, retrieve password and return here.
break;
}
case 6:{
this.RemoteConnectionStepCounter++;
this.showText();
break;
}
case 8:{
//If we already tried with second management termianl go directly to Local Connection
if(Actions_done.RemoteConnectionDiffMenTerm){
Intent intent = new Intent(this, LocalConnection.class);
startActivity(intent);
}
this.RemoteConnectionStepCounter++;
this.showText();
break;
}
case 9:{
//Different management terminal will be used. Return to Management Terminal Setup (change WhereTo parameter)
TerminalSetup.TerminalSetup_WhereTo = "RemoteConnection";
RemoteConnectionStepCounter = 1;
RemoteConnectionYesStep2 = false;
RemoteConnectionYesStep3 = false;
Actions_done.BrowserChecksDone = false;
Actions_done.RemoteConnectionDiffMenTerm = true;
Intent intent = new Intent(this, TerminalSetup.class);
startActivity(intent);
break;
}
}
}
public void RemoteConnectionOnYes(View View) {
switch (this.RemoteConnectionStepCounter) {
case 2:{
//Go to step 5
this.RemoteConnectionStepCounter = this.RemoteConnectionStepCounter + 3;
RemoteConnectionYesStep2 = true; //Declare there was a jump from step2 to step5
this.showText();
break;
}
case 3:{
//Go to step 5
this.RemoteConnectionStepCounter = this.RemoteConnectionStepCounter + 2;
RemoteConnectionYesStep3 = true; //Declare there was a jump from step3 to step5
this.showText();
break;
}
case 4:{
//Go to LocalConnection
}
case 5:{
//Login to GUI
this.RemoteConnectionStepCounter++;
this.showText();
}
case 6:{
//Go to chapter 8 SystemChecks and Recovery
}
case 8:{
//Got to chapter 8 SystemChecks and Recovery
}
case 9:{
//LocalConnection button is pressed go to Local Connection
}
}
}
//All text used
public void showText(){
switch (this.RemoteConnectionStepCounter){
case 1:{
this.RemoteConnectionHeader.setText(R.string.RemoteConnectionHeader);
this.RemoteConnectionStatement.setText(Html.fromHtml(getString(R.string.RemoteConnectionAccessISMURL)));
this.showOk();
break;
}
case 2:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionIsWelcomePageDisplayed);
this.showYESNO();
break;
}
case 3:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionIsWelcomePageDisplayed);
this.showYESNO();
break;
}
case 4:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionIfLocal);
this.showYESNO();
break;
}
case 5:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionClickLogIn);
this.showForgottenPass_Ok();
break;
}
case 6:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionAbleToLogIn);
this.showYESNO();
break;
}
case 7:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionRestartBrowser);
this.showOk();
break;
}
case 8:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionAbleToLogIn);
this.showYESNO();
break;
}
case 9:{
this.RemoteConnectionStatement.setText(R.string.RemoteConnectionSecondMngTerminal);
this.showDiffMngLocalConnect();
break;
}
}
}
//Show only YES and NO Buttons
public void showYESNO(){
this.RemoteConnectionButtonYES.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonYES.setText(R.string.YES_Button);
this.RemoteConnectionButtonNO.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonNO.setText(R.string.NO_Button);
this.RemoteConnectionButtonContinue.setVisibility(View.GONE);
}
public void showForgottenPass_Ok(){
this.RemoteConnectionButtonYES.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonYES.setText(R.string.OK_Button);
this.RemoteConnectionButtonNO.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonNO.setText(R.string.ForgottenPassButton);
this.RemoteConnectionButtonContinue.setVisibility(View.GONE);
}
public void showDiffMngLocalConnect(){
this.RemoteConnectionButtonYES.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonYES.setText(R.string.ChooseConnectionLocalButton);
this.RemoteConnectionButtonNO.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonNO.setText(R.string.DiffMngTerm);
this.RemoteConnectionButtonContinue.setVisibility(View.GONE);
}
//Show only Continue Button, but set text to "OK"
public void showOk(){
this.RemoteConnectionButtonYES.setVisibility(View.GONE);
this.RemoteConnectionButtonNO.setVisibility(View.GONE);
this.RemoteConnectionButtonContinue.setVisibility(View.VISIBLE);
this.RemoteConnectionButtonContinue.setText(R.string.OK_Button);
}
}
使用此代码邀请班级：
1）BrowserChecks
switch (this.BCWhereTo.toString()) {
//If BC is called from Local connection, return to local connection, and state that BC is done
case "LocalConnection":{
Actions_done.BrowserChecksDone = true;
boolean BCIncreaseCounterBy1 = true;
Intent intent = new Intent(this, LocalConnection.class);
intent.putExtra("Increase", BCIncreaseCounterBy1);
startActivity(intent);
break;
}
//If BC is called from Remote connection, return to remote connection, and state that BC is done
case "RemoteConnection":{
Actions_done.BrowserChecksDone = true;
boolean BCIncreaseCounterBy1 = true;
Intent intent = new Intent(this, RemoteConnection.class);
intent.putExtra("BCIncrease", BCIncreaseCounterBy1);
startActivity(intent);
break;
}
}
2）NetworkChecks
case 8:{
boolean GoToStep5 = true;
Intent intent = new Intent(this, RemoteConnection.class);
intent.putExtra("ChangeStep", GoToStep5);
startActivity(intent);
break;
}
如果我在“RemoteConnection”中只使用一个布尔值，它可以正常工作，如果我尝试使用完整代码，我的应用程序崩溃并收到以下内容：
E / AndroidRuntime：致命异常：主要 java.lang.IllegalStateException：无法执行android：onClick的方法 在android.support.v7.app.AppCompatViewInflater $ DeclaredOnClickListener.onClick（AppCompatViewInflater.java:293） 在android.view.View.performClick（View.java:4204） 在android.view.View $ PerformClick.run（View.java:17355） 在android.os.Handler.handleCallback（Handler.java:725） 在android.os.Handler.dispatchMessage（Handler.java:92） 在android.os.Looper.loop（Looper.java:137） 在android.app.ActivityThread.main（ActivityThread.java:5041） at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:511） 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:793） 在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:560） at dalvik.system.NativeStart.main（Native Method） 引起：java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:511） 在android.support.v7.app.AppCompatViewInflater $ DeclaredOnClickListener.onClick（AppCompatViewInflater.java:288） 在android.view.View.performClick（View.java:4204） 在android.view.View $ PerformClick.run（View.java:17355） 在android.os.Handler.handleCallback（Handler.java:725） 在android.os.Handler.dispatchMessage（Handler.java:92） 在android.os.Looper.loop（Looper.java:137） 在android.app.ActivityThread.main（ActivityThread.java:5041） at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:511） 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:793） 在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:560） at dalvik.system.NativeStart.main（Native Method） 引起：java.lang.NullPointerException 在com.ericsson.isemergencyrecoveryprocedures.BrowserChecks.BrowserChecksOnContinue（BrowserChecks.java:116） at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:511） 在android.support.v7.app.AppCompatViewInflater $ DeclaredOnClickListener.onClick（AppCompatViewInflater.java:288） 在android.view.View.performClick（View.java:4204） 在android.view.View $ PerformClick.run（View.java:17355） 在android.os.Handler.handleCallback（Handler.java:725） 在android.os.Handler.dispatchMessage（Handler.java:92） 在android.os.Looper.loop（Looper.java:137） 在android.app.ActivityThread.main（ActivityThread.java:5041） at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:511） 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:793） 在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:560） at dalvik.system.NativeStart.main（Native Method） 申请已终止。
如果有人可以为此问题提出解决方案。 先感谢您 ：-） 菌柄