camera

app/src/main/java/com/example/ninefourone/nutritionmaster/camera/CameraPreview.java

@@ -0,0 +1,63 @@
+package com.example.ninefourone.nutritionmaster.camera;
+
+import android.content.Context;
+import android.hardware.Camera;
+import android.view.SurfaceView;
+import android.view.SurfaceHolder;
+
+
+import com.orhanobut.logger.Logger;
+
+import java.io.IOException;
+
+/**
+ * Created by ScorpioMiku on 2018/9/3.
+ */
+
+public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
+
+    private SurfaceHolder mHolder;
+    private Camera camera;
+
+    public CameraPreview(Context context, Camera camera) {
+        super(context);
+        this.camera = camera;
+        mHolder = getHolder();
+        mHolder.addCallback(this);
+//        mHolder.setType();
+    }
+
+
+    @Override
+    public void surfaceCreated(SurfaceHolder holder) {
+        try {
+            camera.setPreviewDisplay(holder);
+            camera.startPreview();
+        } catch (IOException e) {
+            Logger.e(e.getMessage());
+        }
+    }
+
+    @Override
+    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+        if (mHolder.getSurface() == null) {
+            return;
+        }
+        try {
+            camera.stopPreview();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        try {
+            camera.setPreviewDisplay(mHolder);
+            camera.startPreview();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void surfaceDestroyed(SurfaceHolder holder) {
+
+    }
+}

app/src/main/java/com/example/ninefourone/nutritionmaster/camera/FoodMaterialCamera.java

@@ -0,0 +1,156 @@
+package com.example.ninefourone.nutritionmaster.camera;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.hardware.Camera;
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.example.ninefourone.nutritionmaster.R;
+import com.example.ninefourone.nutritionmaster.utils.MessageUtils;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.OnClick;
+
+/**
+ * Created by ScorpioMiku on 2018/9/3.
+ */
+
+public class FoodMaterialCamera extends AppCompatActivity {
+    @BindView(R.id.camera_preview)
+    FrameLayout mCameraLayout;
+    @BindView(R.id.results_text_view)
+    TextView resultsTextView;
+    @BindView(R.id.more_take_photo_button_capture)
+    ImageView moreTakePhotoButtonCapture;
+    @BindView(R.id.more_takephoto_ok)
+    ImageView moreTakephotoOk;
+    @BindView(R.id.more_camera_cover_linearlayout)
+    FrameLayout moreCameraCoverLinearlayout;
+
+    private Camera mCamera;
+    private CameraPreview mPreview;
+
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        //取消toolbar
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        //设置全屏
+        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
+                WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        //注意：上面两个设置必须写在setContentView前面
+        setContentView(R.layout.cameras_layout);
+        ButterKnife.bind(this);
+
+        if (!checkCameraHardware(this)) {
+            MessageUtils.MakeToast("不支持相机");
+        } else {
+            openCamera();
+        }
+    }
+
+    /**
+     * 检查当前设备是否有相机
+     *
+     * @param context
+     * @return
+     */
+    private boolean checkCameraHardware(Context context) {
+        if (context.getPackageManager().hasSystemFeature(
+                PackageManager.FEATURE_CAMERA)) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+
+    /**
+     * 打开相机
+     */
+    private void openCamera() {
+        if (null == mCamera) {
+            mCamera = getCameraInstance();
+            mPreview = new CameraPreview(this, mCamera);
+//            mPreview.setOnTouchListener(new View.OnTouchListener() {
+//                @Override
+//                public boolean onTouch(View v, MotionEvent event) {
+//                    mCamera.autoFocus(null);
+//                    return false;
+//                }
+//            });
+            mCameraLayout.addView(mPreview);
+            mCamera.startPreview();
+        }
+    }
+
+    /**
+     * 获取相机
+     *
+     * @return
+     */
+    private Camera getCameraInstance() {
+        Camera c = null;
+        try {
+            c = Camera.open();
+            Camera.Parameters mParameters = c.getParameters();
+            mParameters.setPictureSize(720, 1280);
+            c.setParameters(mParameters);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        return c;
+    }
+
+    /**
+     * 对焦回调,对焦完成后进行拍照
+     */
+    private Camera.AutoFocusCallback mAutoFocusCallback = new Camera.AutoFocusCallback() {
+        @Override
+        public void onAutoFocus(boolean success, Camera camera) {
+            if (success) {
+                mCamera.takePicture(null, null, mPictureCallback);
+            }
+        }
+    };
+
+    /**
+     * 拍照回调
+     */
+    private Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
+        @Override
+        public void onPictureTaken(final byte[] data, Camera camera) {
+            MessageUtils.MakeToast("拍照！");
+            mCamera.startPreview();
+        }
+    };
+
+
+    /**
+     * 两个按钮的事件
+     *
+     * @param view
+     */
+    @OnClick({R.id.more_take_photo_button_capture, R.id.more_takephoto_ok})
+    public void onViewClicked(View view) {
+        switch (view.getId()) {
+            case R.id.more_take_photo_button_capture:
+                mCamera.autoFocus(mAutoFocusCallback);
+                break;
+            case R.id.more_takephoto_ok:
+                break;
+        }
+    }
+}

app/src/main/java/com/example/ninefourone/nutritionmaster/utils/PermissionUtils.java

@@ -0,0 +1,19 @@
+package com.example.ninefourone.nutritionmaster.utils;
+
+import android.content.Context;
+
+/**
+ * Created by ScorpioMiku on 2018/9/3.
+ */
+
+public class PermissionUtils {
+
+    /**
+     * 动态获取相机权限
+     * @param context
+     * @param photoFromCamera
+     */
+    public static void requestCameraPermission(Context context, String photoFromCamera) {
+
+    }
+}