Android/frameworks_base
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge "Fixed Drag-and-Drop sample code"

Browse Source
This commit is contained in:
Christopher Tate
2013-10-29 22:02:06 +00:00
committed by Gerrit Code Review
parent 4bf6eb1775 130e1294e8
commit e431b97c1f
1 changed files with 65 additions and 77 deletions
Download Patch File Download Diff File Expand all files Collapse all files

142
docs/html/guide/topics/ui/drag-drop.jd
View File

@@ -873,7 +873,7 @@ imageView.setOnDragListener(mDragListen);
...
protected class myDragEventListener implements View.OnDragEventListener {
protected class myDragEventListener implements View.OnDragListener {
// This is the method that the system calls when it dispatches a drag event to the
// listener.
@@ -901,16 +901,13 @@ protected class myDragEventListener implements View.OnDragEventListener {
// returns true to indicate that the View can accept the dragged data.
return(true);
} else {
}
// Returns false. During the current drag and drop operation, this View will
// not receive events again until ACTION_DRAG_ENDED is sent.
return(false);
// Returns false. During the current drag and drop operation, this View will
// not receive events again until ACTION_DRAG_ENDED is sent.
return(false);
}
break;
case DragEvent.ACTION_DRAG_ENTERED: {
case DragEvent.ACTION_DRAG_ENTERED:
// Applies a green tint to the View. Return true; the return value is ignored.
@@ -921,77 +918,68 @@ protected class myDragEventListener implements View.OnDragEventListener {
return(true);
break;
case DragEvent.ACTION_DRAG_LOCATION:
case DragEvent.ACTION_DRAG_LOCATION:
// Ignore the event
return(true);
return(true);
case DragEvent.ACTION_DRAG_EXITED:
// Re-sets the color tint to blue. Returns true; the return value is ignored.
v.setColorFilter(Color.BLUE);
// Invalidate the view to force a redraw in the new tint
v.invalidate();
return(true);
case DragEvent.ACTION_DROP:
// Gets the item containing the dragged data
ClipData.Item item = event.getClipData().getItemAt(0);
// Gets the text data from the item.
dragData = item.getText();
// Displays a message containing the dragged data.
Toast.makeText(this, "Dragged data is " + dragData, Toast.LENGTH_LONG);
// Turns off any color tints
v.clearColorFilter();
// Invalidates the view to force a redraw
v.invalidate();
// Returns true. DragEvent.getResult() will return true.
return(true);
case DragEvent.ACTION_DRAG_ENDED:
// Turns off any color tinting
v.clearColorFilter();
// Invalidates the view to force a redraw
v.invalidate();
// Does a getResult(), and displays what happened.
if (event.getResult()) {
Toast.makeText(this, "The drop was handled.", Toast.LENGTH_LONG);
} else {
Toast.makeText(this, "The drop didn't work.", Toast.LENGTH_LONG);
}
// returns true; the value is ignored.
return(true);
// An unknown action type was received.
default:
Log.e("DragDrop Example","Unknown action type received by OnDragListener.");
break;
case DragEvent.ACTION_DRAG_EXITED:
// Re-sets the color tint to blue. Returns true; the return value is ignored.
v.setColorFilter(Color.BLUE);
// Invalidate the view to force a redraw in the new tint
v.invalidate();
return(true);
break;
case DragEvent.ACTION_DROP:
// Gets the item containing the dragged data
ClipData.Item item = event.getClipData().getItemAt(0);
// Gets the text data from the item.
dragData = item.getText();
// Displays a message containing the dragged data.
Toast.makeText(this, "Dragged data is " + dragData, Toast.LENGTH_LONG);
// Turns off any color tints
v.clearColorFilter();
// Invalidates the view to force a redraw
v.invalidate();
// Returns true. DragEvent.getResult() will return true.
return(true);
break;
case DragEvent.ACTION_DRAG_ENDED:
// Turns off any color tinting
v.clearColorFilter();
// Invalidates the view to force a redraw
v.invalidate();
// Does a getResult(), and displays what happened.
if (event.getResult()) {
Toast.makeText(this, "The drop was handled.", Toast.LENGTH_LONG);
} else {
Toast.makeText(this, "The drop didn't work.", Toast.LENGTH_LONG);
};
// returns true; the value is ignored.
return(true);
break;
// An unknown action type was received.
default:
Log.e("DragDrop Example","Unknown action type received by OnDragListener.");
break;
};
};
}
return(false);
}
};
</pre>