將圖像從一個佈局拖放到另一個佈局

Question

我已經實現了將圖像從水平滾動視圖拖放到另一個佈局，在該佈局中攝像機的表面視圖可用，並且當我放置圖像時，包含圖像的佈局移除但我不'不要這樣。請幫助我，我已經搜索了很多，但沒有得到。我的XML和Java代碼在這裏

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:id="@+id/layout" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
app:layout_behavior="@string/appbar_scrolling_view_behavior" 
tools:showIn="@layout/activity_main" tools:context=".MainActivity"> 

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

<HorizontalScrollView 
    android:id="@+id/container" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true" 
    android:scrollbars="none" 
    android:layout_marginBottom="5dp" > 

    <LinearLayout 
     android:id="@+id/inhorizontalscrollview" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:gravity="center_vertical" 
     android:orientation="horizontal" > 

     <ImageView 
      android:id="@+id/civ" 
      android:layout_width="100dp" 
      android:layout_height="100dp" 
      android:src="@drawable/a"/> 

    </LinearLayout> 
</HorizontalScrollView> 
</RelativeLayout> 

public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, View.OnTouchListener, View.OnDragListener { 

private static final String LOGCAT = "CamTestActivity"; 

SurfaceView cameraView; 
SurfaceHolder surfaceHolder; 
Camera camera; 
RelativeLayout.LayoutParams params; 

int[] img={R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.e, R.drawable.f}; 


RelativeLayout fm; 
LinearLayout inHorizontalScrollView; 
ImageView civ; 

int width,height; 


@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2) 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
      WindowManager.LayoutParams.FLAG_FULLSCREEN); 

    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    setContentView(R.layout.content_main); 
    /*Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar);*/ 

    inHorizontalScrollView = (LinearLayout) findViewById(R.id.inhorizontalscrollview);   

    /*FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); 
    fab.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG) 
        .setAction("Action", null).show(); 
     } 
    });*/ 


    fm = ((RelativeLayout) findViewById(R.id.layout)); 

    civ = (ImageView) findViewById(R.id.civ); 

    inHorizontalScrollView.setOnDragListener(this); 
    civ.setOnTouchListener(this); 
    fm.setOnDragListener(this); 
    //findViewById(R.id.mainLayout).setOnDragListener(this); 
    cameraView = (SurfaceView) this.findViewById(R.id.surfaceView); 
    surfaceHolder = cameraView.getHolder(); 
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    surfaceHolder.addCallback(this); 

    Display display = getWindowManager().getDefaultDisplay(); 
    Point size = new Point(); 
    display.getSize(size); 
    width = size.x; 
    height = size.y; 
    Log.d(LOGCAT, "width = "+width+" height = "+height); 

    /*for(int i=0;i<img.length;i++){ 
     //Log.v("on recent frnds", "on post execute"); 
     //if(recfrnd.get(i).length()>1){ 
      //Log.v("on recent frnds", "in if "+recfrnd.get(i)); 
      civ = new ImageView(MainActivity.this); 
      civ.setLayoutParams(new LayoutParams(120, 120)); 
      civ.setPadding(0, 0, 25, 0); 
      civ.setImageResource(img[i]); 
     inHorizontalScrollView.addView(civ); 
     civ.setOnLongClickListener(this); 


    }*/ 

} 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    //getMenuInflater().inflate(R.menu.menu_main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 



@Override 
public void surfaceCreated(SurfaceHolder holder) { 
    camera = Camera.open(); 
    try { 
     camera.setPreviewDisplay(holder); 
     Camera.Parameters parameters = camera.getParameters(); 
     if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) { 
      parameters.set("orientation", "portrait"); 
      camera.setDisplayOrientation(90); 
     } 
     camera.setParameters(parameters); 
    } catch (IOException exception) { 
     camera.release(); 
    } 
} 

@Override 
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { 
    camera.startPreview(); 
} 

@Override 
public void surfaceDestroyed(SurfaceHolder holder) { 
    camera.stopPreview(); 
    camera.release(); 
} 

@Override 
public boolean onTouch(View view, MotionEvent event) { 
    if (event.getAction() == MotionEvent.ACTION_DOWN) { 
     View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view); 
     view.startDrag(null, shadowBuilder, view, 0); 
     //view.setVisibility(View.INVISIBLE); 
     return true; 
    } 
    else { 
     return false; 
    } 
} 

@Override 
public boolean onDrag(View layoutview, DragEvent dragevent) { 
    int x_cord=0,y_cord=0; 
    int action = dragevent.getAction(); 
    switch (action) { 
     case DragEvent.ACTION_DRAG_STARTED: 
      Log.d(LOGCAT, "Drag event started"); 
      return true; 
      //break; 
     case DragEvent.ACTION_DRAG_ENTERED: 
      Log.d(LOGCAT, "Drag event entered into "+layoutview.toString()); 
      if(layoutview.getId()==R.id.layout) { 
       // params = (FrameLayout.LayoutParams) layoutview.getLayoutParams(); 
       params=new RelativeLayout.LayoutParams(civ.getWidth(),civ.getHeight()); 
       return true; 
      } 
      return false; 
      // break; 
     case DragEvent.ACTION_DRAG_EXITED: 
      Log.d(LOGCAT, "Drag event exited from "+layoutview.toString()); 
      return false; 
      //break; 
     case DragEvent.ACTION_DROP: 
      Log.d(LOGCAT, "Dropped"); 
      View view = (View) dragevent.getLocalState(); 
      ViewGroup owner = (ViewGroup) view.getParent(); 
      ViewGroup container = (ViewGroup) layoutview; 
      owner.removeView(view); 
      if(layoutview.getId()==R.id.layout) { 
       // RelativeLayout container = (RelativeLayout)layoutview; 
       x_cord = (int) dragevent.getX(); 
       y_cord = (int) dragevent.getY(); 
       Log.d(LOGCAT, "Dropped x="+x_cord+" y="+y_cord+" w="+civ.getWidth()+" h="+civ.getHeight()); 
       if(x_cord+civ.getWidth()>width){ 
        int min = x_cord+civ.getWidth()-width; 
        x_cord = x_cord-min; 
       } 
       if(y_cord+civ.getHeight()>height){ 
        int min = y_cord+civ.getHeight()-height; 
        y_cord = y_cord - min; 
       } 
       params.leftMargin = x_cord; 
       params.topMargin = y_cord; 
       Log.d(LOGCAT, "Dropped x=" + x_cord + " y=" + y_cord + " w=" + civ.getWidth() + " h=" + civ.getHeight()); 
       //v.setLayoutParams(params); 
       //view.setX(x_cord); 
       //view.setY(y_cord); 
       container.addView(view, params); 
       view.setVisibility(View.VISIBLE); 
      }else{ 
       // LinearLayout container = (LinearLayout) layoutview; 
       container.addView(view); 
       view.setVisibility(View.VISIBLE); 

      } 
      return true; 
      //break; 
     case DragEvent.ACTION_DRAG_ENDED: 
      Log.d(LOGCAT, "Drag ended"); 
      return false; 
      //break; 
     default: 
      break; 
    } 
    return false; 
} 
} 

Answer 1

一種觀點僅是佈局區域顯示可見你不能看到圖像中的另一個佈局對於這個問題，你必須創建一個寬度和高度匹配父母假佈局並在運行時將視圖添加到視圖位置處的假佈局，並在將不可見的假佈局拖動到需要的位置後拖動到該位置。