Android - Camera Preview
android, camera, preview
Solution
You are calling the last three lines too early. You have to wait for the surface to be prepared before calling `setPreviewDisplay()` and you have to wait for the surface to be sized (`surfaceChanged()`) before calling `startPreview()`. This project has what you need.
Problem
i'm trying the camera preview This is my code and it doesn't throw any error, but the screen is still black. Any ideas? ``` this.setContentView(R.layout.camerapreview); SurfaceView cameraSurface = (SurfaceView)findViewById(R.id.cpPreview); SurfaceHolder holder = cameraSurface.getHolder(); holder.addCallback(this); holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); this.camera = Camera.open(); this.camera.setPreviewDisplay(holder); this.camera.startPreview(); ``` camerapreview.xml ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content"> <SurfaceView android:id="@+id/cpPreview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center"> </SurfaceView> </LinearLayout> ```