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我正在尝试拍摄照片,然后对其进行裁剪。所以基本上,我启动相机意图,然后我开始裁剪意图。

由于我无法通过“onActivityResult”数据传递大位图,我创建了一个 URI 将图像直接保存到 SDCard,但由于某种原因,它被保存在模拟器上,而不是真实设备上。(我的意思是,CROP 没有保存在真实设备上。)

这是代码:

File resultingFile;
Bitmap fotoCreada;
Uri uriFoto;

相机意图:

File folder = new File(Environment.getExternalStorageDirectory().toString()+"/PictureFolder/");
folder.mkdirs();
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
resultingFile=new File(folder.toString() + "/"+currentDateandTime+".jpg");
this.uriFoto=Uri.fromFile(resultingFile);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, this.uriFoto);
startActivityForResult(cameraIntent, 1888); 

然后我检索结果:

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    //Si venim de la camera
    if( requestCode == 1888 && resultCode == -1) { //-1 = TOT HA ANAT BE.
        Bitmap photo = BitmapFactory.decodeFile(resultingFile.getPath());
        Matrix matrix = new Matrix();
        matrix.postRotate(90);
        matrix.postScale(0.5f,0.5f);
        Bitmap photoRotated = Bitmap.createBitmap(photo, 0, 0, photo.getWidth(), photo.getHeight(), matrix, true);
        //Desem foto rotada.
        this.fotoCreada=photoRotated;
        try {
            FileOutputStream out = new FileOutputStream(this.resultingFile.getPath());
            this.fotoCreada.compress(Bitmap.CompressFormat.PNG, 90, out);
        } catch (Exception e) {
            e.printStackTrace();
        }
        performCrop();
    }

所以我打电话给 performCrop();

private void performCrop() {
    try {
        Log.d("debugging","Estic a crop. La foto és:"+this.uriFoto);
        Intent cropIntent = new Intent("com.android.camera.action.CROP");
        cropIntent.setDataAndType(this.uriFoto, "image/*");
        cropIntent.putExtra("crop", "true");
        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        cropIntent.putExtra("outputX", 600);
        cropIntent.putExtra("outputY", 600);
        //cropIntent.putExtra("return-data", true);
        cropIntent.putExtra("ouput", this.uriFoto);
        startActivityForResult(cropIntent,1234);
    }
    catch(ActivityNotFoundException anfe){
        //display an error message
        String errorMessage = "Whoops - your device doesn't support the crop action!";
        Toast toast = Toast.makeText(this.cont, errorMessage, Toast.LENGTH_SHORT);
        toast.show();
    }
}

如你看到的:

cropIntent.putExtra("ouput", this.uriFoto);

基本上告诉将作物输出到该 URI。URI 是正确的,因为我已经对其进行了调试(LogCat):

Estic 作物。照片:file:///mnt/sdcard/PictureFolder/20130123_223058.jpg

然后,我回到活动结果:

[... previous onactivityresult]
if (requestCode == 1234 && resultCode == -1){
        Log.d("debugging","Ha acabat el croop.");
        Uri imageUri = this.uriFoto;
        try {
            Bitmap photo = MediaStore.Images.Media.getBitmap(this.cont.getContentResolver(), imageUri);
            this.fotoCreada=photo;
            ((ImageView) myFragmentView.findViewById(R.id.fotoCapturada)).setImageBitmap(this.fotoCreada);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        //Bitmap photo = BitmapFactory.decodeFile(resultingFile.getPath());     
    }

但我最终得到的是显示 (setImageBitmap(this.fotoCreada);) 从相机捕获的图像,而不是裁剪后的图片。这发生在真实设备上,但不在模拟器上!

我试图解释我能做到的最好的方式。随意问。

谢谢。

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0 回答 0