com.amazonaws.devicefarm.android.referenceapp.Fragments.Tabs.Native.Native_CameraFragment.java Source code

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Here is the source code for com.amazonaws.devicefarm.android.referenceapp.Fragments.Tabs.Native.Native_CameraFragment.java

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/*
 * Copyright 2014-2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 * http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */

package com.amazonaws.devicefarm.android.referenceapp.Fragments.Tabs.Native;

import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;

import com.amazonaws.devicefarm.android.referenceapp.R;

import butterknife.ButterKnife;
import butterknife.InjectView;

/**
 * A fragment that demos a camera preview
 */
public class Native_CameraFragment extends Fragment implements SurfaceHolder.Callback {
    public final String CAMERA_FRAGMENT_TAG = "CAMERA_FRAGMENT";

    Camera camera;

    @InjectView(R.id.camera_surface_view)
    SurfaceView surfaceView;

    private SurfaceHolder surfaceHolder;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.native_camera_fragment, container, false);
        ButterKnife.inject(this, view);
        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(this);
        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        return view;
    }

    private boolean hasCamera(Context ctx) {
        return ctx.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA);
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        try {
            camera = Camera.open();
            camera.setDisplayOrientation(90);
            Camera.Parameters parameters = camera.getParameters();
            camera.setParameters(parameters);
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
            surfaceView.setContentDescription(getString(R.string.camera_preview_on));
        } catch (Exception e) {
            Log.e(CAMERA_FRAGMENT_TAG, String.valueOf(e));
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        refreshCamera();
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        try {
            camera.stopPreview();
            camera.release();
            camera = null;
        } catch (Exception e) {
            Log.e(CAMERA_FRAGMENT_TAG, String.valueOf(e));
        }
    }

    private void refreshCamera() {
        if (surfaceHolder.getSurface() == null) {
            return;
        }

        try {
            camera.stopPreview();
        } catch (Exception e) {
            Log.e(CAMERA_FRAGMENT_TAG, String.valueOf(e));
        }

        try {
            camera.setPreviewDisplay(surfaceHolder);
            camera.startPreview();
        } catch (Exception e) {
            Log.e(CAMERA_FRAGMENT_TAG, String.valueOf(e));
        }
    }
}