Question

我有一个简单的应用程序，我正在尝试测试。它有两个活动和两个按钮（每个按钮转到另一个活动 - MainActivity和MainActivity2），我正在尝试对它进行一些简单的Robotium测试。我收到以下错误：

java.lang.RuntimeException：套件构造期间的异常 android.test.suitebuilder.TestSuiteBuilder $ FailedToCreateTests.testSuiteConstructionFailed（TestSuiteBuilder.java:238）在java.lang.reflect.Method.invokeNative（Native Method）at android.test.AndroidTestRunner.runTest（AndroidTestRunner.java:191）at android.test.AndroidTestRunner.runTest（AndroidTestRunner.java:176）at android.test.InstrumentationTestRunner.onStart（InstrumentationTestRunner.java:554）在 android.app.Instrumentation $ InstrumentationThread.run（Instrumentation.java:1840）引起：java.lang.reflect.InvocationTargetException at java.lang.reflect.Constructor.constructNative（Native Method）at java.lang.reflect.Constructor.newInstance（Constructor.java:423）at android.test.suitebuilder.TestMethod.instantiateTest（TestMethod.java:87）在android.test.suitebuilder.TestMethod.createTest（TestMethod.java:73）在 android.test.suitebuilder.TestSuiteBuilder.addTest（TestSuiteBuilder.java:262）在 android.test.suitebuilder.TestSuiteBuilder.build（TestSuiteBuilder.java:184）在 android.test.InstrumentationTestRunner.onCreate（InstrumentationTestRunner.java:379）在 android.app.ActivityThread.handleBindApplication（ActivityThread.java:5142）在android.app.ActivityThread.access $ 1500（ActivityThread.java:156）at android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1418）在android.os.Handler.dispatchMessage（Handler.java:102）at android.os.Looper.loop（Looper.java:157）at android.app.ActivityThread.main（ActivityThread.java:5872）at java.lang.reflect.Method.invokeNative（Native Method）at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:858）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:674）at dalvik.system.NativeStart.main（Native方法）引起： java.lang.NullPointerException at android.view.ViewConfiguration.get（ViewConfiguration.java:338）at android.view.View。（View.java:3490）at android.view.View。（View.java:3547）at android.widget.TextView。（TextView.java:674）at android.widget.Button。（Button.java:107）at android.widget.CompoundButton。（CompoundButton.java:68）at android.widget.CheckBox。（CheckBox.java:68）at android.widget.CheckBox。（CheckBox.java:64）at android.widget.CheckBox。（CheckBox.java:60）at com.example.twoactivities.test.RobotiumTest1。（RobotiumTest1.java:19） ......还有18个

我已经尝试了所有我能找到的东西，但这些解决方案都不适合我。（构造函数中没有参数，检查构建路径以确保JAR位于正确的位置，确保我的测试应用程序是“可调试的”，等等。）

我的代码在这里：

package com.example.twoactivities.test;

import com.example.twoactivities.*;
import com.robotium.solo.Solo;
import android.test.ActivityInstrumentationTestCase2;
import android.widget.CheckBox;
import android.widget.CheckBox;
import android.app.Activity;    

public class RobotiumTest1 extends ActivityInstrumentationTestCase2<MainActivity> {

        private Solo solo;

        public RobotiumTest1() {
            super(MainActivity.class);
        }

        @Override
        public void setUp() throws Exception {
            //setUp() is run before a test case is started. 
            //This is where the solo object is created.
            solo = new Solo(getInstrumentation(), getActivity());
        }

//      @Override
//      public void tearDown() throws Exception {
//          //tearDown() is run after a test case has finished. 
//          //finishOpenedActivities() will finish all the activities that have been opened during the test execution.
//          solo.finishOpenedActivities();
//      }


        public void testClickButton() throws Exception{

            solo.assertCurrentActivity("Expected to be on MainActivity activity", "MainActivity.class");
            solo.clickOnButton("Go to page 2");
            solo.assertCurrentActivity("Not on Activity 2", MainActivity2.class);
            solo.clickOnButton("Go to page 1");
            solo.assertCurrentActivity("Not on Activity 1", MainActivity.class);

        }       

    }

我有什么想法可以让这个测试运行？

谢谢，斯蒂芬妮

编辑：

MainActivity

package com.example.twoactivities;

import com.example.twoactivities.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;

public class MainActivity extends Activity {
        final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox1);
        final TextView text2 = (TextView) findViewById(R.id.checkBoxTextView);

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void activity2(View view){
        Intent intent = new Intent(this,com.example.twoactivities.MainActivity2.class);
        startActivity(intent);
    }

    public void onCheckBoxClicked(View view){
        if (checkBox.isChecked()) {
            text2.setText("Checked");
        }
        else {
            ((TextView) findViewById(R.id.checkBoxTextView)).setText("Unchecked");
        }
    }
}

MainActivity2

package com.example.twoactivities;

import com.example.twoactivities.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;

    public class MainActivity2 extends Activity {

           @Override
           protected void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_main2);
           }

           public void activity1(View view){
              Intent intent = new Intent(this,com.example.twoactivities.MainActivity.class);
              startActivity(intent);
           }

}

我实际上没有改变任何东西（我不认为），因为它上次成功运行。

9月12日编辑： 在我尝试使用它之后，“solo”对象正在初始化。

package com.example.twoactivities.test;

import com.example.twoactivities.*;
import com.example.twoactivities.R;
import com.robotium.solo.Solo;
import android.test.ActivityInstrumentationTestCase2;
import android.widget.CheckBox;
import android.widget.TextView;


public class RobotiumTest1 extends ActivityInstrumentationTestCase2<MainActivity> {

        public Solo solo;
        private TextView checkBoxText; 
        public CheckBox checkBox1 ;

        public RobotiumTest1() {
            super(MainActivity.class);
        }

        @Override
        public void setUp() throws Exception {
            //setUp() is run before a test case is started. 
            //This is where the solo object is created.
            solo = new Solo(getInstrumentation(), getActivity());
            checkBoxText = (TextView) getActivity().findViewById(R.id.checkBoxTextView);
            checkBox1 = (CheckBox) getActivity().findViewById(R.id.checkBox1);
        }

        public void testClickButton() throws Exception{

            solo.assertCurrentActivity("Expected to be on MainActivity activity", "MainActivity");
            solo.clickOnButton("Go to page 2");
            solo.assertCurrentActivity("Not on Activity 2", MainActivity2.class);
            solo.clickOnButton("Go to page 1");
            solo.assertCurrentActivity("Not on Activity 1", MainActivity.class);

        }

Answer 1

线索在您发布的日志中。

Caused by: java.lang.NullPointerException
at android.view.ViewConfiguration.get(ViewConfiguration.java:338) 
at android.view.View.(View.java:3490) 
at android.view.View.(View.java:3547) 
at android.widget.TextView.(TextView.java:674) 
at android.widget.Button.(Button.java:107) 
at android.widget.CompoundButton.(CompoundButton.java:68) 
at android.widget.CheckBox.(CheckBox.java:68) 
at android.widget.CheckBox.(CheckBox.java:64) 
at android.widget.CheckBox.(CheckBox.java:60) at com.example.twoactivities.test.RobotiumTest1.(RobotiumTest1.java:19) ... 18 more

你有一个NullPointerException导致问题，这个NullPointerException在您的应用程序代码中，而不是在此处发布的代码（请注意，如果您添加它，我会在这里为您调查）< / p>

修改的下面的代码是问题：

public class MainActivity extends Activity {
            final CheckBox checkBox = (CheckBox) findViewById(R.id.checkBox1);
            final TextView text2 = (TextView) findViewById(R.id.checkBoxTextView);

问题是你试图在调用onCreate（）之前找到实际上不存在的视图，因此这些视图将为null。将这些初始化移到onCreate（），你应该没问题。

接下来编辑以在评论中回答您的问题。

好的，现在我们离开Robotium并进入核心Java，你现在遇到的问题是范围，事情是你声明一个变量，它是可访问的，与你实例化的地方不同。您可以在与当前相同的范围内声明存在的变量，但在onCreate()中对其进行实例化。

package com.example.twoactivities;

import com.example.twoactivities.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;

public class MainActivity extends Activity {
        final CheckBox checkBox;
        final TextView text2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        checkBox = (CheckBox) findViewById(R.id.checkBox1);
        text2 = (TextView) findViewById(R.id.checkBoxTextView);
    }

    public void activity2(View view){
        Intent intent = new Intent(this,com.example.twoactivities.MainActivity2.class);
        startActivity(intent);
    }

    public void onCheckBoxClicked(View view){
        if (checkBox.isChecked()) {
            text2.setText("Checked");
        }
        else {
            ((TextView) findViewById(R.id.checkBoxTextView)).setText("Unchecked");
        }
    }
}

测试Android应用程序：套件构建期间的异常

1 个答案: