surfaceview

My app one of the fragments draws a map in a surface view with an overlay for buttons and text. Most of the other fragments are lists. My problem is that during the transition between the map and another fragment, ugly black rectangles momentarily appear in the map view where the text and button views are placed. This appears more pronounced on a transition back to the map, although it does happen in both directions. I am using a slide-left/slide-right animation which works nicely in all other respects. I've tried other animations and no animation. Setting the text and buttons invisible before

做应用可能有时候需要调用本地的摄像头，所以这里就记录意下如何调用。 摄像头预览需要在布局文件添加surfaceview, 这里需要注意，其实用FrameLayout也可以，大家可以参考 http://www.cnblogs.com/over140/archive/2011/11/16/2251344.html 1、布局 <SurfaceView android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/surfaceview"/> 只要在布局文件添加这个即可。 2、摄像头预览 public class MainActivity extends Activity implements SurfaceHolder.Callback 继承Activity，实现SurfaceHolder.Callback，MainActivity里需要我们复写以下几个方法： @Override public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) { System.out.println("surfacechanged"); } @Override public void

Basically I want to use SurfaceView for animation. Therefore the class implements Runnable. To experiment, I want to draw a circle. However, it shows only a black screen. I have been trying for days. Really appreciate if someone can help. MainActivity class public class MainActivity extends Activity { private Bitmap Liquid; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature (Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); DrawStripFrame D1

Okay so Im trying to set the background of a SurfaceView to a JPG file. But it doesn't seem to want to draw the image, and all I get is a black screen. Here:s my code: public class FloorplanActivity extends Activity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); MapView mapView = new MapView(getApplicationContext()); setContentView(mapView); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.floorplan, menu); return true; }

I'm sorry if this topic has been brought before, but all my searches on the web and google groups did not help me. I'm currently developing a little game with the Android SDK, and use hi-res bitmaps that I resize accordingly to match the device's resolution (letting the system do it for me is not "crisp" enough). I use a SurfaceView, on which I paint in one pass a canvas filling the whole surface. The paint uses setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN)) to allow masking. Beforehand, I retrieve various bitmaps -- which are resized at initialization with createScaledBitmap()