如何让人们拍摄他们在我的应用中使用的照片？

Question

我制作了一个看起来像蛇的应用。 有一个大的红色方块，每当您在屏幕上某处触摸带有大红色方块的小白色方块时，就会弹出另一个小白色方块。 重复大约30秒。 但是现在我想知道如何使人们以自己的头像为例，并将其用作红色方块。 所以你的脸需要吃所有的白块。 我搜索了一下，发现Smosh Super Head Esploder X具有我想要的功能。 请帮我 ！

Answer 1

使用它，它将帮助您从相机和画廊中拍照。

/*captureImageInitialization Method
 * to select image from gallery or pick through camera
 */
 private void captureImageInitialization() {
    /**
     * a selector dialog to display two image source options, from camera
     * ‘Take from camera’ and from existing files ‘Select from gallery’
     */
    final String[] items = new String[] { "Take from camera","Select from gallery" };
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(getBaseContext(),android.R.layout.select_dialog_item, items);
    AlertDialog.Builder builder = new AlertDialog.Builder(getBaseContext());

    builder.setTitle("Select Image");
    builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
        /*
         * (non-Javadoc)
         * @see android.content.DialogInterface.OnClickListener#onClick(android.content.DialogInterface, int)
         */
        public void onClick(DialogInterface dialog, int item) { // pick from
                                                                // camera
               if (item == 0){
                /**
                 * To take a photo from camera, pass intent action
                 * ‘MediaStore.ACTION_IMAGE_CAPTURE‘ to open the camera app.
                 */
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

                /**
                 * Also specify the Uri to save the image on specified path
                 * and file name. Note that this Uri variable also used by
                 * gallery app to hold the selected image path.
                 */
                mImageCaptureUri = Uri.fromFile(new File(Environment
                        .getExternalStorageDirectory(), "tmp_avatar_"
                        + String.valueOf(System.currentTimeMillis())
                        + ".jpg"));
                intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
                        mImageCaptureUri);
                 try {
                    intent.putExtra("return-data", true);
                    startActivityForResult(intent, PICK_FROM_CAMERA);
                   }catch (ActivityNotFoundException e) {
                    e.printStackTrace();
                  }
                } else{
                // pick from file
                /**
                 * To select an image from existing files, use
                 * Intent.createChooser to open image chooser. Android will
                 * automatically display a list of supported applications,
                 * such as image gallery or file manager.
                 */
                Intent intent = new Intent();
                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);
                startActivityForResult(Intent.createChooser(intent,
                        "Complete action using"), PICK_FROM_FILE);
            }
         }
     });
     dialog = builder.create();
}
/*
* (non-Javadoc)
* @see android.app.Fragment#onActivityResult(int, int, android.content.Intent)
*/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != Activity.RESULT_OK)
        return;
    switch (requestCode) {

    case PICK_FROM_CAMERA:
        /**
         * After taking a picture, do the crop
         */
        doCrop();
        break;
    case PICK_FROM_FILE:
        /**
         * After selecting image from files, save the selected path
         */
         mImageCaptureUri = data.getData();
         doCrop();
         break;
    case CROP_FROM_CAMERA:
        Bundle extras = data.getExtras();
        /**
         * After cropping the image, get the bitmap of the cropped image and
         * display it on imageview.
         */
        if (extras != null) {
            Bitmap photo = extras.getParcelable("data");
            imageofuser.setImageBitmap(photo);
            }
        File f = new File(mImageCaptureUri.getPath());
        /**
         * Delete the temporary image
         */
        if (f.exists())
            f.delete();
           break;
        }
 }
 /*doCrop() method
  * this method crop the selected image and set to imageview
  */
    private void doCrop() {
        final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
        /**
         * Open image crop app by starting an intent
         * ‘com.android.camera.action.CROP‘.
         */
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setType("image/*");

        /**
         * Check if there is image cropper app installed.
         */
        List<ResolveInfo> list = getBaseContext().getPackageManager().queryIntentActivities(intent, 0);
        int size = list.size();

        /**
         * If there is no image cropper app, display warning message
         */
        if (size == 0) {
            Toast.makeText(getBaseContext(), "Can not find image crop app",Toast.LENGTH_SHORT).show();
            return;
        } else {
        /**
         * Specify the image path, crop dimension and scale
         */
        intent.setData(mImageCaptureUri);
        intent.putExtra("outputX", 200);
        intent.putExtra("outputY", 200);
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("scale", true);
        intent.putExtra("return-data", true);
        /**
         * There is posibility when more than one image cropper app exist,
         * so we have to check for it first. If there is only one app, open
         * then app.
         */
               if (size==1){
                Intent i = new Intent(intent);
                ResolveInfo res = list.get(0);
                i.setComponent(new ComponentName(res.activityInfo.packageName,
                    res.activityInfo.name));
                startActivityForResult(i, CROP_FROM_CAMERA);
            } else {
            /**
             * If there are several app exist, create a custom chooser to
             * let user selects the app.
             */
             for(ResolveInfo res : list) {
                final CropOption co = new CropOption();
                co.title = getBaseContext().getPackageManager().getApplicationLabel(
                        res.activityInfo.applicationInfo);
                co.icon =getBaseContext().getPackageManager().getApplicationIcon(
                        res.activityInfo.applicationInfo);
                co.appIntent = new Intent(intent);
                co.appIntent.setComponent(new ComponentName(
                                res.activityInfo.packageName,
                                res.activityInfo.name));
                cropOptions.add(co);
             }
            CropOptionAdapter adapter = new CropOptionAdapter(getBaseContext().getApplicationContext(), cropOptions);

            AlertDialog.Builder builder = new AlertDialog.Builder(getBaseContext());
            builder.setTitle("Choose Crop App");
            builder.setAdapter(adapter,
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int item) {
                            startActivityForResult(
                                    cropOptions.get(item).appIntent,
                                    CROP_FROM_CAMERA);
                        }
                    });

            builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {

                    if (mImageCaptureUri != null) {getBaseContext().getContentResolver().delete(mImageCaptureUri, null,
                                null);
                        mImageCaptureUri = null;
                    }
                }
            });
            AlertDialog alert = builder.create();
            alert.show();
        }
    }
}

CropOptionAdapter：

    public class CropOptionAdapter extends ArrayAdapter<CropOption> {
    private ArrayList<CropOption> mOptions;
    private LayoutInflater mInflater;

    public CropOptionAdapter(Context context, ArrayList<CropOption> options){
        super(context, R.layout.crop_selector);
        mOptions = options;
        mInflater = LayoutInflater.from(context);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup group) {
        if(convertView==null)
        convertView = mInflater.inflate(R.layout.crop_selector, null);
        CropOption item = mOptions.get(position);
        if(item != null){
        ((ImageView) convertView.findViewById(R.id.iv_icon))
                    .setImageDrawable(item.icon);
        ((TextView) convertView.findViewById(R.id.tv_name))
                    .setText(item.title);
         return convertView;
        }
         return null;
       }
     }

   class CropOption {
    public CharSequence title;
    public Drawable icon;
    public Intent appIntent;
 }

cropselector.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"
    android:padding="10dp">

    <ImageView
        android:id="@+id/iv_icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <TextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""/>
</LinearLayout>

并提供图片裁剪选项，