Установка кнопки infront другого вида

Я создал пользовательское приложение для камеры, которое захватывает изображение и сохраняет изображение в галерее. Мое приложение работает отлично, но у меня небольшие проблемы с представлением.Установка кнопки infront другого вида

В настоящее время мое приложение выглядит следующим образом

enter image description here

При использовании кнопки внутри FrameLayout и установить его на передний план я получаю аварию. Я отправил кодирование ниже

Мой MainActivity.class

public class MainActivity extends Activity { 

    private ImageHandler preview; 
    Camera camera; 
    int cameraID, currentCamera; 
    Button capture; 
    FrameLayout imageLayout; 
    SurfaceView imgl; 
    private static final String TAG = "CallCamera"; 

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

     /* 
     * Invoking Camera and Setting the ImageHandler for preview 
     */ 
     camera = getCameraInstance(); 
     preview = new ImageHandler(this, camera); 

     /* 
     * Getting the ID of the FrameLayout that displays the camera 
     */ 

     imageLayout = (FrameLayout) findViewById(R.id.preview_layout); 
     imageLayout.addView(preview); 

     /* 
     * Getting the ID of capture Button and setting its Functionality 
     */ 

     capture = (Button) findViewById(R.id.cameraButton); 

     capture.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // TODO Auto-generated method stub 
       camera.takePicture(null, null, null, pic); 
      } 
     }); 

    } 

    private Camera getCameraInstance() { 
     // TODO Auto-generated method stub 
     Camera cam = null; 
     try { 
      cam = Camera.open(); 
     } catch (Exception e) { 

     } 
     return cam; 
    } 

    PictureCallback pic = new PictureCallback() { 

     @Override 
     public void onPictureTaken(byte[] data, Camera camera) { 

      File pictureFileDir = getDir(); 

      if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) { 

       Log.d(TAG, "Can't create directory to save image."); 
       Toast.makeText(getApplicationContext(), 
         "Can't create directory to save image.", 
         Toast.LENGTH_LONG).show(); 
       return; 

      } 

      SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss"); 
      String date = dateFormat.format(new Date()); 
      String photoFile = "Picture_" + date + ".jpg"; 

      String filename = pictureFileDir.getPath() + File.separator 
        + photoFile; 

      File pictureFile = new File(filename); 

      try { 
       FileOutputStream fos = new FileOutputStream(pictureFile); 
       fos.write(data); 
       fos.close(); 
       Toast.makeText(getApplicationContext(), 
         "New Image saved:" + photoFile, Toast.LENGTH_LONG) 
         .show(); 
       sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory()))); 
      } catch (Exception error) { 
       Log.d(TAG, 
         "File" + filename + "not saved: " + error.getMessage()); 
       Toast.makeText(getApplicationContext(), 
         "Image could not be saved.", Toast.LENGTH_LONG).show(); 
      } 



      camera.startPreview(); 
     } 

     private File getDir() { 
      File sdDir = Environment 
        .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); 
      return new File(sdDir, "MYCAMERA"); 
     } 

    }; 


    @Override 
    public void onResume() { 
     super.onResume(); 
     if (camera == null) { 
      camera = Camera.open(); 
      preview.setCamera(camera); 
     } 
    } 

}

Мой ImageHandler.class (Preview)

public class ImageHandler extends SurfaceView implements SurfaceHolder.Callback { 

    private SurfaceHolder holder; 
    private Camera imgCamera; 
    List<Size> imgSupportedPreviewSizes; 

    public ImageHandler(Context context, Camera camera) { 
     super(context); 
     // TODO Auto-generated constructor stub 
     this.imgCamera = camera; 
     this.holder = this.getHolder(); 
     this.holder.addCallback(this); 
     this.holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    } 

    @Override 
    public void surfaceChanged(SurfaceHolder holder, int format, int width, 
      int height) { 
     // TODO Auto-generated method stub 
     try { 
      imgCamera.setPreviewDisplay(holder); 
      imgCamera.startPreview(); 
     } catch (IOException e) { 

     } 
    } 

    @Override 
    public void surfaceCreated(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 
     try { 
      imgCamera.setPreviewDisplay(holder); 
      imgCamera.startPreview(); 
      imgCamera.setDisplayOrientation(90); 

     } catch (Exception e) { 

     } 

    } 

    @Override 
    public void surfaceDestroyed(SurfaceHolder holder) { 
     // TODO Auto-generated method stub 
     imgCamera.stopPreview(); 
     imgCamera.release(); 
    } 

    public void setCamera(Camera camera) { 
     imgCamera = camera; 
     if (imgCamera != null) { 
      imgSupportedPreviewSizes = imgCamera.getParameters() 
        .getSupportedPreviewSizes(); 
      requestLayout(); 
     } 
    } 

}

Мой рабочий activity_main.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:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 

    <FrameLayout 
     android:id = "@+id/btn_layout" 
     android:layout_width="match_parent" 
     android:layout_height="50dp" 
     android:layout_alignParentBottom="true" 
     android:layout_marginBottom="10dp"> 

     <Button 
      android:id="@+id/cameraButton" 
      android:layout_width="wrap_content" 
      android:layout_height="match_parent" 
      android:layout_gravity="center" 
      android:text="Capture" /> 

    </FrameLayout> 

    <FrameLayout 
     android:id="@+id/preview_layout" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_above="@+id/btn_layout" 
     android:layout_marginTop="10dp" 
     android:layout_marginBottom="10dp" > 



    </FrameLayout> 

</RelativeLayout>

Мои Изменено/Отредактированный XML-файл

<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:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 



    <FrameLayout 
     android:id="@+id/preview_layout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_alignParentTop="true" 
     android:layout_marginTop="10dp" 
     android:layout_marginBottom="10dp" 
     android:foreground="@+id/cameraButton" > 

     <Button 
      android:id="@+id/cameraButton" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:layout_gravity="center|bottom" 
      android:text="Capture" /> 



    </FrameLayout> 

</RelativeLayout>

Моего Logcat Краш

12-05 11:19:59.346: E/AndroidRuntime(21506): FATAL EXCEPTION: main 
12-05 11:19:59.346: E/AndroidRuntime(21506): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.camera/com.example.camera.MainActivity}: android.view.InflateException: Binary XML file line #13: Error inflating class <unknown> 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2121) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2146) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread.access$700(ActivityThread.java:140) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1238) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.os.Handler.dispatchMessage(Handler.java:99) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.os.Looper.loop(Looper.java:137) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread.main(ActivityThread.java:4944) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at java.lang.reflect.Method.invokeNative(Native Method) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at java.lang.reflect.Method.invoke(Method.java:511) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at dalvik.system.NativeStart.main(Native Method) 
12-05 11:19:59.346: E/AndroidRuntime(21506): Caused by: android.view.InflateException: Binary XML file line #13: Error inflating class <unknown> 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.createView(LayoutInflater.java:619) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:666) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.rInflate(LayoutInflater.java:752) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.inflate(LayoutInflater.java:495) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:317) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.Activity.setContentView(Activity.java:1924) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at com.example.camera.MainActivity.onCreate(MainActivity.java:44) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.Activity.performCreate(Activity.java:5188) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2085) 
12-05 11:19:59.346: E/AndroidRuntime(21506): ... 11 more 
12-05 11:19:59.346: E/AndroidRuntime(21506): Caused by: java.lang.reflect.InvocationTargetException 
12-05 11:19:59.346: E/AndroidRuntime(21506): at java.lang.reflect.Constructor.constructNative(Native Method) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.view.LayoutInflater.createView(LayoutInflater.java:593) 
12-05 11:19:59.346: E/AndroidRuntime(21506): ... 24 more 
12-05 11:19:59.346: E/AndroidRuntime(21506): Caused by: android.content.res.Resources$NotFoundException: Resource is not a Drawable (color or path): TypedValue{t=0x12/d=0x0 a=3 r=0x7f080001} 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.content.res.Resources.loadDrawable(Resources.java:2239) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.content.res.TypedArray.getDrawable(TypedArray.java:601) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.widget.FrameLayout.<init>(FrameLayout.java:109) 
12-05 11:19:59.346: E/AndroidRuntime(21506): at android.widget.FrameLayout.<init>(FrameLayout.java:97) 
12-05 11:19:59.346: E/AndroidRuntime(21506): ... 27 more

отредактированного XML Layout

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/preview_layout" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <SurfaceView 
     android:id="@+id/surfaceView1" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

    <Button 
     android:id="@+id/cameraButton" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="bottom|center" 
     android:text="Button" /> 

</FrameLayout>

часть, где я вызвать представление поверхности

super.onCreate (savedInstanceState); setContentView (R.layout.activity_main);

/* 
* Invoking Camera and Setting the ImageHandler for preview 
*/ 
camera = getCameraInstance(); 
preview = new ImageHandler(this, camera); 

/* 
* Getting the ID of the FrameLayout that displays the camera 
*/ 

imageLayout = (FrameLayout) findViewById(R.id.preview_layout); 
imageLayout.addView(preview); 

/* 
* Getting the ID of capture Button and setting its Functionality 
*/

Мой новый образ

enter image description here

источник

2013-12-05 Saraschandraa

да, я хочу, чтобы плакатная кнопка была на верхней поверхности поверхности – Saraschandraa

<FrameLayout 
     android:id="@+id/preview_layout" 
     ..... 
     android:layout_marginBottom="10dp" 
     android:foreground="@+id/cameraButton" > //<<<<< here

Pass Drawable идентификатор вместо кнопки ид в android:foreground атрибута

источник

2013-12-05 05:58:25

Android: передний план = "@ + ид/cameraButton" является неправильным. Вы должны установить выделение для андроида: переднем плане

источник

2013-12-05 06:05:31 Shashika

Да, я понял, что, но есть ли возможность установить кнопку на верхней поверхности поверхности. – Saraschandraa

Почему нет, вы попробуете что-то подобное. https://pastee.org/9y3gq – Shashika

спасибо @Shashika за ответ, когда я пытаюсь реализовать код, кнопка не видна вообще, кнопка остается в фоновом режиме – Saraschandraa

Установка кнопки infront другого вида

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