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package dk.thoerup.android.barcodesample;
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import android.app.Activity;
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import android.content.Intent;
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import android.hardware.Camera;
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import android.support.v7.app.ActionBarActivity;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.Surface;
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import android.view.SurfaceHolder;
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import android.view.SurfaceView;
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import android.view.View;
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import java.io.IOException;
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public class CamActivity extends ActionBarActivity {
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Camera cam;
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SurfaceView surfaceView;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_cam);
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surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
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surfaceView.getHolder().addCallback(new SurfaceHolder.Callback() {
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public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
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}
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public void surfaceCreated(SurfaceHolder holder) {
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Log.i("CAM", "surface created");
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try {
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cam.setPreviewDisplay(holder);
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cam.startPreview();
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} catch (IOException e) {
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Log.d("CAM", "Error opening cam", e);
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}
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}
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public void surfaceDestroyed(SurfaceHolder holder) {
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}
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});
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surfaceView.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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cam.takePicture(
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new Camera.ShutterCallback() {
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@Override
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public void onShutter() {
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}
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},
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new Camera.PictureCallback() {//raw
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@Override
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public void onPictureTaken(byte[] data, Camera camera) {
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}
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},
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new Camera.PictureCallback() {//postview
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@Override
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public void onPictureTaken(byte[] data, Camera camera) {
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}
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},
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new Camera.PictureCallback() { //JPEG
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@Override
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public void onPictureTaken(byte[] data, Camera camera) {
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cam.release();
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Intent resultIntent = new Intent();
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resultIntent.putExtra("DATA", data);
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CamActivity.this.setResult(Activity.RESULT_OK, resultIntent);
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CamActivity.this.finish();
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}
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});
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}
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});
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cam = Camera.open();
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setCameraDisplayOrientation(this,0,cam);
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}
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/*
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* lånt fra
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* http://developer.android.com/reference/android/hardware/Camera.html#setDisplayOrientation(int)
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*/
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public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) {
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android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
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android.hardware.Camera.getCameraInfo(cameraId, info);
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int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
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int degrees = 0;
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switch (rotation) {
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case Surface.ROTATION_0: degrees = 0; break;
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case Surface.ROTATION_90: degrees = 90; break;
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case Surface.ROTATION_180: degrees = 180; break;
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case Surface.ROTATION_270: degrees = 270; break;
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}
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int result;
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if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
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result = (info.orientation + degrees) % 360;
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result = (360 - result) % 360; // compensate the mirror
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} else { // back-facing
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result = (info.orientation - degrees + 360) % 360;
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}
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camera.setDisplayOrientation(result);
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}
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@Override
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protected void onPause () {
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super.onPause();
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cam.release();
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}
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@Override
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public boolean onCreateOptionsMenu(Menu menu) {
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// Inflate the menu; this adds items to the action bar if it is present.
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getMenuInflater().inflate(R.menu.menu_cam, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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// Handle action bar item clicks here. The action bar will
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// automatically handle clicks on the Home/Up button, so long
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// as you specify a parent activity in AndroidManifest.xml.
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int id = item.getItemId();
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//noinspection SimplifiableIfStatement
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if (id == R.id.action_settings) {
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return true;
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}
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return super.onOptionsItemSelected(item);
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}
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}
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