FileDocCategorySizeDatePackage
TextureViewActivity.javaAPI DocAndroid 5.1 API5550Thu Mar 12 22:22:44 GMT 2015com.android.test.hwui

TextureViewActivity

public class TextureViewActivity extends android.app.Activity implements TextureView.SurfaceTextureListener

Fields Summary
private android.hardware.Camera
mCamera
private android.view.TextureView
mTextureView
private android.widget.FrameLayout
mContent
private android.graphics.Matrix
mMatrix
Constructors Summary
Methods Summary
private intgetCameraOrientation()

        Camera.CameraInfo info = new Camera.CameraInfo();
        for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
            Camera.getCameraInfo(i, info);
            if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) break;
        }
        
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        int degrees = 0;

        switch (rotation) {
            case Surface.ROTATION_0:
                degrees = 0;
                break;
            case Surface.ROTATION_90:
                degrees = 90;
                break;
            case Surface.ROTATION_180:
                degrees = 180;
                break;
            case Surface.ROTATION_270:
                degrees = 270;
                break;
        }

        return (info.orientation - degrees + 360) % 360;
protected voidonCreate(android.os.Bundle savedInstanceState)


    
        
        super.onCreate(savedInstanceState);

        mContent = new FrameLayout(this);

        mTextureView = new TextureView(this);
        mTextureView.setSurfaceTextureListener(this);
        mTextureView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Bitmap b = mTextureView.getBitmap(800, 800);
                BufferedOutputStream out = null;
                try {
                    File dump = new File(Environment.getExternalStorageDirectory(), "out.png");
                    out = new BufferedOutputStream(new FileOutputStream(dump));
                    b.compress(Bitmap.CompressFormat.PNG, 100, out);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } finally {
                    if (out != null) try {
                        out.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        });

        Button button = new Button(this);
        button.setText("Remove/Add");
        button.setOnClickListener(new View.OnClickListener() {
            private boolean mAdded = true;

            @Override
            public void onClick(View v) {
                if (mAdded) {
                    mContent.removeView(mTextureView);
                } else {
                    mContent.addView(mTextureView);
                }
                mAdded = !mAdded;
            }
        });

        mContent.addView(mTextureView, new FrameLayout.LayoutParams(
                FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
                Gravity.CENTER));
        mContent.addView(button, new FrameLayout.LayoutParams(
                FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
                Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
        setContentView(mContent);
public voidonSurfaceTextureAvailable(android.graphics.SurfaceTexture surface, int width, int height)

        mCamera = Camera.open();
        mCamera.setDisplayOrientation(getCameraOrientation());

        Camera.Size previewSize = mCamera.getParameters().getPreviewSize();
        mTextureView.setLayoutParams(new FrameLayout.LayoutParams(
                previewSize.width, previewSize.height, Gravity.CENTER));

        try {
            mCamera.setPreviewTexture(surface);
        } catch (IOException t) {
            android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
        }

        mCamera.startPreview();
public booleanonSurfaceTextureDestroyed(android.graphics.SurfaceTexture surface)

        mCamera.stopPreview();
        mCamera.release();
        return true;
public voidonSurfaceTextureSizeChanged(android.graphics.SurfaceTexture surface, int width, int height)

        // Ignored, the Camera does all the work for us
public voidonSurfaceTextureUpdated(android.graphics.SurfaceTexture surface)

        // Ignored