I built a simple unity project, exported as simple, not directly with the android project, then create a new android project, unity will export the resources of copy one by one go in, and then to jump in the mainActivity unityActivity, but every time I finish the current unityActivity would crash, here is my android code, the great god help look at this is why, very grateful!

Manifests:

 & lt; ? The XML version="1.0" encoding="utf-8"?> 
Package="com. Cain. Unitytest" & gt; 

Android: smallScreens="true" 
Android: normalScreens="true" 
Android: largeScreens="true" 
Android: xlargeScreens="true" 
Android: anyDensity="true"/& gt; 


The android: name="tool. MyApplication" 
Android: allowBackup="true" 
The android: icon="@ mipmap/ic_launcher" 
Android: label="@ string/app_name" 
Android: supportsRtl="true" 
Android: theme="@ style/AppTheme" & gt; 
Android: name="activity. The MainActivity" 
Android: screenOrientation="portrait" 
Android: launchMode="singleTask" & gt; 
 
 
 
Android: screenOrientation="portrait" 
Android: configChanges="MCC | newsun focus | locale | touchscreen | the rid_device_info_keyboard | keyboardHidden | navigation | orientation | screenLayout | uiMode | screenSize | smallestScreenSize | fontScale" & gt; 
<meta - data android: name="unityplayer UnityActivity" android: value="https://bbs.csdn.net/topics/true"/& gt; 
<meta - data android: name="unityplayer ForwardNativeEventsToDalvik" android: value="https://bbs.csdn.net/topics/false"/& gt; 
 
 

 

UnityPlayerActivity:

 package com. Cain. Unitytest. Activity; 

The import com. Cain. Unitytest. R; 
The import com. Cain. Unitytest. Inject. ContentView; 
The import com. Cain. Unitytest. Inject. ViewInject; 
The import com. Unity3d. Player. *; 

The import android. Content. Res. The Configuration; 
The import android. OS. Bundle; 
The import android. View. MotionEvent; 
The import android. View. The view; 
The import android. Widget. LinearLayout; 
The import android. Widget. Toast; 

@ SuppressWarnings (" unused ") 
@ ContentView (R.l ayout. Activity_unity) 
Public class UnityPlayerActivity extends BaseActivity {
Private static final String TAG=UnityPlayerActivity. Class. GetSimpleName (); 

Protected UnityPlayer mUnityPlayer;//don 't change the name of this variable; Referenced from native code 

@ ViewInject (R.i d.u nity_test_view) 
Private LinearLayout unityPanel; 

//Setup the activity layout 
@ Override protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState); 
MUnityPlayer=new UnityPlayer (this); 

UnityPanel. AddView (mUnityPlayer); 
} 

/* * 
* change the background color, the unity function called 
* @ param v launch component 
*/
Public void changeBackgroundColor (View v) {
UnityPlayer. UnitySendMessage (" AndroidInterface ChangeCameraBackground ", ""," # fafafa "); 
} 

/* * 
* show toast, is called the unity 
* @ param message toast content 
*/
Public void showToast (final String message) {
RunOnUiThread (new Runnable () {
@ Override 
Public void the run () {
Toast. MakeText (UnityPlayerActivity. This, the message, Toast. LENGTH_SHORT), show (); 
} 
}); 
} 

/* * 
* return to last page 
*/
@ Override 
Public void onBackPressed () {
//super. OnBackPressed (); 
//UnityPlayer. UnitySendMessage (" AndroidInterface "and" Finish ", ""); 
//mUnityPlayer. Quit (); 
finish(); 
} 

//the Quit Unity 
@ Override 
Protected void onDestroy () {
MUnityPlayer. Quit (); 
super.onDestroy(); 
} 

//Pause Unity 
@ Override 
Protected void onPause () {
Super. OnPause (); 
MUnityPlayer. Pause (); 
} 

//Resume Unity 
@ Override 
Protected void onResume () {
Super. OnResume (); 
MUnityPlayer. Resume (); 
} 

//This ensures the layout will be correct. 
@ Override 
Public void onConfigurationChanged (Configuration newConfig) {
Super. OnConfigurationChanged (newConfig); 
MUnityPlayer. ConfigurationChanged (newConfig); 
} 

//Notify the Unity of the focus change. 
@ Override 
Public void onWindowFocusChanged (Boolean hasFocus) {
Super. OnWindowFocusChanged (hasFocus); 
MUnityPlayer. WindowFocusChanged (hasFocus); 
} 

@ Override 
Public Boolean onTouchEvent (MotionEvent event) {
Return mUnityPlayer. InjectEvent (event); 
} 
} 

Crash every time is at the bottom of the error, and each has the following error:
Start the unity page:
7-21 15:54:55. 810, 331-917/? nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull