测试两个活动之间的转换并返回到第一个活动

Question

我正在开发一个应用程序，要求用户按下按钮并转到其他活动。问题是我无法从那里继续。我希望能够模拟按钮按钮并返回到之前的活动。这是我的代码。

package com.example.guy.smsclassproject; 

import android.os.Looper; 
import android.test.ActivityInstrumentationTestCase2; 
import android.test.UiThreadTest; 
import android.test.suitebuilder.annotation.SmallTest; 
import android.widget.Button; 
import android.widget.EditText; 

import java.util.ArrayList; 

/** 
* Created by ksl130230 on 11/5/2015. 
*/ 
public class DraftsActivityTest extends ActivityInstrumentationTestCase2<DraftsActivity> { 

    private DraftsActivity tester; 
    private EditText searchText; 
    private Button searchButton; 
    private DraftsDatabase draftsDatabase; 
    private MessageObject messageObject1; 
    private MessageObject messageObject2; 
    private MessageObject messageObject3; 
    Button[] draftButtons; 

    ArrayList<MessageObject> messagesToBeDisplayed; 

    public DraftsActivityTest() { 
     super(DraftsActivity.class); 
    } 

    @Override 
    @UiThreadTest 
    public void setUp() throws Exception { 
     super.setUp(); 
     if (Looper.myLooper() == null) 
     { 
      Looper.prepare(); 
     } 
     draftsDatabase = new DraftsDatabase(); 
     draftsDatabase.clearData(); 
     messageObject1 = new MessageObject("hi", "5554",null, true); 
     messageObject2 = new MessageObject("hi hi", "5555554",null, true); 
     messageObject3 = new MessageObject("sup", "5435555554",null, true); 
     draftsDatabase.addMessage(messageObject1); 
     draftsDatabase.addMessage(messageObject2); 
     draftsDatabase.addMessage(messageObject3); 
     tester = getActivity(); 
     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     searchText = (EditText) tester.findViewById(R.id.searchText); 
     searchButton = (Button) tester.findViewById(R.id.searchButton); 


    } 


    @SmallTest 
    @UiThreadTest 
    public void testSearch() { 
     searchText.setText("hij"); 
     searchButton.performClick(); 

     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("Messages with the word hi", 0, messagesToBeDisplayed.size()); 

     searchText.setText("sup"); 
     searchButton.performClick(); 

     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("Messages with the word sup", 1, messagesToBeDisplayed.size()); 

     searchText.setText("yo"); 
     searchButton.performClick(); 

     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("Messages with the word yo", 0, messagesToBeDisplayed.size()); 

     searchText.setText("i"); 
     searchButton.performClick(); 

     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("Messages with the word i", 2, messagesToBeDisplayed.size()); 

    } 

    @SmallTest 
    @UiThreadTest 
    public void testRedisplay() 
    { 
     assertNotNull(tester.draftButtons[0]); 
     tester.draftButtons[0].performClick(); 
     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("Size of the list after deletion is 2", 2, messagesToBeDisplayed.size()); //presses the first button, which deletes it from the drafts 
     getActivity(); 
     String buttonText0 = tester.draftButtons[0].getText().toString(); 
     if(buttonText0.equals("5555554: hi hi")) assertSame("Text redisplayed on the first button", buttonText0, messageObject2.toString()); //gets the text of the current button, since the messageobject1 was in draftsButtons0 before, not it should have messageobject2 

     assertNotNull(tester.draftButtons[1]); 
     String buttonText1 = tester.draftButtons[1].getText().toString(); 
     if(buttonText1.equals("5435555554: sup")) 
      assertSame("Text redisplayed on the second button", buttonText1, messageObject3.toString()); 

    } 

    @SmallTest 
    @UiThreadTest 
    public void testMessageButtons() 
    { 

     assertNotNull(tester.draftButtons[0]); 
     tester.draftButtons[0].performClick(); 

     //THE PROBLEM IS LOCATED HERE. 
     //As soon as I press the button, the app goes to another activity. 
     //I want it to go back from the activity. 

     assertNotNull(tester.draftButtons[1]); 
     tester.draftButtons[1].performClick(); 

     messagesToBeDisplayed = tester.messagesToBeDisplayed; 
     assertEquals("The draftsDatabase now only contains 1 message", 1, messagesToBeDisplayed.size()); 

     assertNotNull(tester.draftButtons[0]); 
     tester.draftButtons[0].performClick(); 

     assertNull(draftsDatabase); //after you press all the buttons, the draftsDatabase should be empty because all the messages have been deleted 

    } 



} 

Answer 1

这是我最近编写的应用程序代码。如果用户按下一个按钮，则它会转到另一个活动，您将模拟按钮按下并返回到上一个活动，并且我也做了一些修改，您可以将数据从文本视图传递到第二个活动

MainActivity

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.EditText; 

public class MainActivity extends AppCompatActivity { 

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

    public void onClick(View view) { 
     Intent i = new Intent(this, Main2Activity.class); 

     final EditText inputText = (EditText) findViewById(R.id.inputText); 
     String mesg = inputText.getText().toString(); 
     i.putExtra("mm",mesg); 

     startActivity(i); 
    } 
} 

Main2Activity

import android.annotation.TargetApi; 
import android.content.Intent; 
import android.os.Build; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.transition.Transition; 
import android.transition.TransitionManager; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.RelativeLayout; 
import android.widget.TextView; 

public class Main2Activity extends AppCompatActivity { 

    ViewGroup RLayout; 

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

     Bundle data = getIntent().getExtras(); 
     if(data == null){ 
      return; 
     } 

     String mm = data.getString("mm"); 

     final TextView textVieww = (TextView) findViewById(R.id.textVieww); 
     textVieww.setText(mm); 

     RLayout = (ViewGroup) findViewById(R.id.RLayout); 

     RLayout.setOnTouchListener(
       new RelativeLayout.OnTouchListener(){ 
        @Override 
        public boolean onTouch(View v, MotionEvent event) { 
         moveButton(); 
         return true; 
        } 
     }); 

    } 

    public void onClickk(View view) { 
     Intent i = new Intent(this, MainActivity.class); 
     startActivity(i); 
    } 
} 

清单

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.user.razaali.third" > 

    <application 
     android:allowBackup="true" 
     android:icon="@mipmap/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name=".Main2Activity" 
      android:label="@string/title_activity_main2" > 
     </activity> 
    </application> 

</manifest> 

activity_main.xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity" 
    android:background="#53ff00"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="First Screen" 
     android:id="@+id/textView" 
     android:layout_above="@+id/inputText" 
     android:layout_centerHorizontal="true" 
     android:layout_marginBottom="33dp" /> 

    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Change" 
     android:id="@+id/button" 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true" 
     android:onClick="onClick" /> 

    <EditText 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/inputText" 
     android:width="250dp" 
     android:layout_above="@+id/button" 
     android:layout_centerHorizontal="true" 
     android:layout_marginBottom="32dp" /> 
</RelativeLayout> 

activity_main2.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    tools:context="com.example.razaali.third.Main2Activity" 
    android:background="#fff306" 
    android:id="@+id/RLayout"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:text="Secound Screen" 
     android:id="@+id/textVieww" 
     android:layout_above="@+id/button2" 
     android:layout_centerHorizontal="true" 
     android:layout_marginBottom="51dp" /> 

    <Button 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Change" 
     android:id="@+id/button2" 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true" 
     android:onClick="onClickk" /> 
</RelativeLayout>