Android Studio应用程序在模拟器中工作，但不在真实设备上

我是新手机android编程，一直有很多麻烦。我终于让我的应用程序在API 23和16上的模拟器中工作，我的目标是API 16.它在模拟器上运行时没有问题，但是当我尝试在手机上使用它时（Google Nexus 5 API 23）Android Studio应用程序在模拟器中工作，但不在真实设备上

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:gravity="center" 
    android:orientation="vertical" 
    android:background="#F44336" 
    android:id="@+id/background" 
    tools:context="thereisstuffhere.MainActivity"> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="Hello World!" 
     android:layout_centerVertical="true" 
     android:layout_centerHorizontal="true" 
     android:id="@+id/factTextBox" 
     android:textSize="25dp" 
     android:textColor="#fff"/> 
</LinearLayout> 


package there is stuff here too; 

import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.GestureDetector; 
import android.view.MotionEvent; 
import android.view.View; 
import android.widget.LinearLayout; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MainActivity extends AppCompatActivity { 

    TextView factBox; 
    LinearLayout bg; 
    Facts factHolder = new Facts(this); 
    Backgrounds backs = new Backgrounds(); 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     factBox = (TextView) findViewById(R.id.factTextBox); 
     factBox.setText(factHolder.nextFact()); 
     bg = (LinearLayout) findViewById(R.id.background); 
     bg.setBackgroundColor(getResources().getColor(backs.getBackground())); 
     bg.setOnTouchListener(new OnSwipeTouchListener(this) 
     { 
      public void onSwipeTop() 
      { 
       //Toast.makeText(MainActivity.this, "top", Toast.LENGTH_SHORT).show(); 
      } 
      public void onSwipeRight() 
      { 
       //Toast.makeText(MainActivity.this, "right", Toast.LENGTH_SHORT).show(); 
       prev(); 
      } 
      public void onSwipeLeft() 
      { 
       //Toast.makeText(MainActivity.this, "left", Toast.LENGTH_SHORT).show(); 
       next(); 
      } 
      public void onSwipeBottom() 
      { 
       //Toast.makeText(MainActivity.this, "bottom", Toast.LENGTH_SHORT).show(); 
      } 
      public boolean onTouch(View v, MotionEvent event) { 
       return gestureDetector.onTouchEvent(event); 
      } 
     }); 
    } 

    private void next() { 
     factBox.setText(factHolder.nextFact()); 
     bg.setBackgroundColor(getResources().getColor(backs.getBackground())); 
    } 

    private void prev() { 
     factBox.setText(factHolder.prevFact()); 
     bg.setBackgroundColor(getResources().getColor(backs.getBackground())); 
    } 

    public void genFact(View view) 
    { 
     factBox.setText(factHolder.nextFact()); 
    }

Facts.java只包含一个巨大的名单和两个函数列表

Backgrounds.java也基本上是同样的事情只有它使用一个整数列表和colors.xml文件返回下一首或上线存储标签等

这是我的OnTouchListener类：

package stuff be here; 

import android.content.Context; 
import android.view.GestureDetector; 
import android.view.GestureDetector.SimpleOnGestureListener; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnTouchListener; 

public class OnSwipeTouchListener implements OnTouchListener { 
    final GestureDetector gestureDetector; 

    public OnSwipeTouchListener(Context ctx) 
    { 
     gestureDetector = new GestureDetector(ctx, new GestureListener()); 
    } 

    @Override 
    public boolean onTouch(View view, MotionEvent motionEvent) 
    { 
     return false; 
    } 

    private final class GestureListener extends SimpleOnGestureListener{ 

     private static final int SWIPE_THRESHOLD = 100; 
     private static final int SWIPE_VELOCITY_THRESHOLD = 100; 

     @Override 
     public boolean onDown(MotionEvent e) 
     { 
      return true; 
     } 

     @Override 
     public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) 
     { 
      boolean result = false; 
      try{ 
       float diffY = e2.getY() - e1.getY(); 
       float diffX = e2.getX() - e1.getX(); 
       if(Math.abs(diffX) > Math.abs(diffY)){ 
        if(Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD){ 
         if(diffX > 0){ 
          onSwipeRight(); 
         }else{ 
          onSwipeLeft(); 
         } 
        } 
        result = true; 
       } 
       else if(Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD){ 
        if(diffY > 0){ 
         onSwipeBottom(); 
        }else{ 
         onSwipeTop(); 
        } 
       } 
       result = true; 
      } catch (Exception exception){ 
       exception.printStackTrace(); 
      } 
      return result; 
     } 
    } 
    public void onSwipeRight(){} 
    public void onSwipeLeft(){} 
    public void onSwipeTop(){} 
    public void onSwipeBottom(){} 
}

我对所有的代码表示歉意，但我一直试图解决这一段时间无济于事。当我尝试运行时出现很多错误，比如“Class not found using boot class loader; no stack trace available”和“Unable to instantiate activity ComponentInf ...”我还收到一些警告，如“ClassLoader referenced unknown path： /数据/应用/ packagenamehere-1/lib目录/ x86_64的和/数据/应用/ packagenamehere-1/lib目录/手臂”即使是在模拟器

这里运行的时候是我的日志猫文件：

12-16 17:26:25.167 22237-22237/com.ubiquity.sciencefacts I/art: Late-enabling -Xcheck:jni 
12-16 17:26:25.197 22237-22243/com.ubiquity.sciencefacts I/art: Ignoring second debugger -- accepting and dropping 
12-16 17:26:25.203 22237-22243/com.ubiquity.sciencefacts I/art: Debugger is no longer active 
12-16 17:26:25.211 22237-22243/com.ubiquity.sciencefacts W/art: Suspending all threads took: 7.324ms 
12-16 17:26:25.235 22237-22237/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-2/lib/arm 
12-16 17:26:25.248 22237-22237/com.ubiquity.sciencefacts D/AndroidRuntime: Shutting down VM 
12-16 17:26:25.254 22237-22237/com.ubiquity.sciencefacts E/AndroidRuntime: FATAL EXCEPTION: main 
12-16 17:26:27.065 22237-22237/com.ubiquity.sciencefacts I/Process: Sending signal. PID: 22237 SIG: 9 
12-16 17:33:18.574 24986-24986/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-1/lib/arm 
12-16 17:33:18.662 24986-24986/com.ubiquity.sciencefacts D/AndroidRuntime: Shutting down VM 
12-16 17:33:18.673 24986-24986/com.ubiquity.sciencefacts E/AndroidRuntime: FATAL EXCEPTION: main 
12-16 17:33:20.800 24986-24986/com.ubiquity.sciencefacts I/Process: Sending signal. PID: 24986 SIG: 9 
12-16 17:34:15.668 25845-25845/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-1/lib/arm 
12-16 17:34:15.687 25845-25845/com.ubiquity.sciencefacts D/AndroidRuntime: Shutting down VM 
12-16 17:34:15.693 25845-25845/com.ubiquity.sciencefacts E/AndroidRuntime: FATAL EXCEPTION: main 
12-16 18:00:52.080 2640-2640/com.ubiquity.sciencefacts I/art: Not late-enabling -Xcheck:jni (already on) 
12-16 18:00:52.142 2640-2640/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-1/lib/x86_64 
12-16 18:00:52.568 2640-2640/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-1/lib/x86_64 
12-16 18:00:52.805 2640-2640/com.ubiquity.sciencefacts W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 
12-16 18:00:53.993 2640-2646/com.ubiquity.sciencefacts W/art: Suspending all threads took: 633.582ms 
12-16 18:00:54.020 2640-2716/com.ubiquity.sciencefacts D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 
12-16 18:00:54.063 2640-2716/com.ubiquity.sciencefacts I/OpenGLRenderer: Initialized EGL, version 1.4 
12-16 18:00:54.091 2640-2716/com.ubiquity.sciencefacts E/EGL_emulation: tid 2716: eglSurfaceAttrib(1165): error 0x3009 (EGL_BAD_MATCH) 
12-16 18:00:54.091 2640-2716/com.ubiquity.sciencefacts W/OpenGLRenderer: Failed to set EGL_SWAP_BEHAVIOR on surface 0x7f8b8ec90c40, error=EGL_BAD_MATCH 
12-16 18:34:41.488 27869-27869/com.ubiquity.sciencefacts I/art: Late-enabling -Xcheck:jni 
12-16 18:34:41.561 27869-27869/com.ubiquity.sciencefacts W/System: ClassLoader referenced unknown path: /data/app/com.ubiquity.sciencefacts-2/lib/arm 
12-16 18:34:41.586 27869-27869/com.ubiquity.sciencefacts D/AndroidRuntime: Shutting down VM 
12-16 18:34:41.589 27869-27869/com.ubiquity.sciencefacts E/AndroidRuntime: FATAL EXCEPTION: main 
                      Process: com.ubiquity.sciencefacts, PID: 27869 
                      java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ubiquity.sciencefacts/com.ubiquity.sciencefacts.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.ubiquity.sciencefacts.MainActivity" on path: DexPathList[[zip file "/data/app/com.ubiquity.sciencefacts-2/base.apk"],nativeLibraryDirectories=[/data/app/com.ubiquity.sciencefacts-2/lib/arm, /vendor/lib, /system/lib]] 
                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327) 
                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                       at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                       at android.os.Handler.dispatchMessage(Handler.java:102) 
                       at android.os.Looper.loop(Looper.java:148) 
                       at android.app.ActivityThread.main(ActivityThread.java:5417) 
                       at java.lang.reflect.Method.invoke(Native Method) 
                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                      Caused by: java.lang.ClassNotFoundException: Didn't find class "com.ubiquity.sciencefacts.MainActivity" on path: DexPathList[[zip file "/data/app/com.ubiquity.sciencefacts-2/base.apk"],nativeLibraryDirectories=[/data/app/com.ubiquity.sciencefacts-2/lib/arm, /vendor/lib, /system/lib]] 
                       at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56) 
                       at java.lang.ClassLoader.loadClass(ClassLoader.java:511) 
                       at java.lang.ClassLoader.loadClass(ClassLoader.java:469) 
                       at android.app.Instrumentation.newActivity(Instrumentation.java:1067) 
                       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2317) 
                       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)  
                       at android.app.ActivityThread.-wrap11(ActivityThread.java)  
                       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
                       at android.os.Handler.dispatchMessage(Handler.java:102)  
                       at android.os.Looper.loop(Looper.java:148)  
                       at android.app.ActivityThread.main(ActivityThread.java:5417)  
                       at java.lang.reflect.Method.invoke(Native Method)  
                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  
                      Suppressed: java.lang.ClassNotFoundException: com.ubiquity.sciencefacts.MainActivity 
                       at java.lang.Class.classForName(Native Method) 
                       at java.lang.BootClassLoader.findClass(ClassLoader.java:781) 
                       at java.lang.BootClassLoader.loadClass(ClassLoader.java:841) 
                       at java.lang.ClassLoader.loadClass(ClassLoader.java:504) 
                        ... 12 more 
                      Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack trace available 
12-16 18:34:43.772 27869-27869/com.ubiquity.sciencefacts I/Process: Sending signal. PID: 27869 SIG: 9

重要更新：我将该程序构建为apk并使用它将其安装在手机上，并且没有问题。这是否意味着在评论中如下所述的目标错误？这是否会影响我的应用程序的分发（为了将来的参考我实际上没有分发这个）？

来源

2016-12-16 John O' Neil

不要道歉发布日志崩溃 –

请复制粘贴您的日志猫文件。 – Champandorid

您是否使用任何权限？如果是，那么你必须编写运行时代码，要求允许你的应用在API 23（或以上）上正常工作。此外，目标API应该始终大于两者（在您的案例中为23而不是16）。 – Talha

关于您的错误，似乎缺少一些SDK。

如果安装了所有需要的SDK和SDK工具，请检查您的SDK管理器。

来源

2016-12-16 08:09:39 beal

这是在我的电脑上吗？我不知道我还需要什么。我相信我拥有一切，虽然我一直有很多问题与jdk和sdk –

基本上你需要安装JDK和Android Studio。 Android Studio应该自己安装所有需要的SDK，但有时会发生可怕的错误。 – beal

如果Android Studio的everthing没问题，你也可以检查你的build.gradle文件和你的清单 Didi你试过改变目标版本，如你的文章下面的评论中所述？ – beal

使用multidexEnabled在你的build.gradle：

defaultConfig { 
    multiDexEnabled true 
}

干净，构建和运行

来源

2016-12-16 12:03:49

这真的可以成为一个问题吗？当然，我非常简单的应用程序没有超过64K的参考？ –

你也可以查看你的build.gradle文件（S）。在你的情况应该是这样的：

android { 
    compileSdkVersion 23 
    buildToolsVersion "23.0.1" 

    defaultConfig { 
     minSdkVersion 16 
     targetSdkVersion 23 
    } 

    buildTypes { 
     debug { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
}

通过minifyEnabled设置为false，确保您禁用proguard的。这可以确保这不会导致额外的错误;）

来源

2016-12-20 08:00:19 beal

在大多数情况下，只需cleaning和rebuilding该项目就可以解决问题。

来源

2017-07-13 10:00:02 imsrgadich

尝试启用USB调试模式。 Here's手册

来源

2017-07-13 10:17:37 Royz

当您使用连接到Android Studio的USB电缆调试/运行您的应用程序时，对于某些设备，当您卸载应用程序并尝试通过studio再次运行它时，它会显示目标错误。

一旦您卸载应用程序，只需从USB电缆断开您的设备并再次连接。

来源

2017-07-21 07:36:52 Danger

Android Studio应用程序在模拟器中工作，但不在真实设备上

回答

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