Question

http://www.c-sharpcorner.com/UploadFile/9e8439/how-to-make-a-custom-camera-ion-android/我制作了一个自定义相机应用程序，点击图片后我想在图片视图中预览它，但是当我在图片视图中预览时，图片正在从图片的实际尺寸缩放。 / p>

Answer 1

他是我让它为我工作的方式！假设您正在捕获图像，并希望在新的活动中显示捕获的图像，您可以按照这种方式：

首先点击按钮，您可以：

    public void cameraFuture(View view) // <-- onClick() method of Camera Button
{
    Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    File file = new File(Environment.getExternalStorageDirectory(),
            "MyPhoto.jpg");
    outPutfileUri = Uri.fromFile(file);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri);
    startActivityForResult(intent, TAKE_PIC);
}

然后在onActivityResult()方法上，您可以这样做：

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == TAKE_PIC && resultCode==RESULT_OK){
        Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show();

        Intent bitIntent = new Intent(this, CameraTake.class);
        bitIntent.putExtra("imageUri", outPutfileUri);
        startActivity(bitIntent);
        finish();


    }

}

在下一个Activity中，您可以通过以下方式接收文件：

Intent receiveIntent = getIntent();

uri = receiveIntent.getParcelableExtra("imageUri");


if (savedInstanceState == null) {
    Bundle extras = getIntent().getExtras();
    if(extras == null) {
        receiveImg= null;
    } else {
        receiveImg= extras.getString("PASSER");
    }
} else {
    receiveImg= (String) savedInstanceState.getSerializable("PASSER");
}




File imgFile = new  File(Environment.getExternalStorageDirectory(),"MyPhoto.jpg");

if(imgFile.exists()){

    Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());

    ImageView myImage = (ImageView) findViewById(R.id.camOut);

    myImage.setImageBitmap(myBitmap);

}

希望它有所帮助！

Answer 2

This link完全描述了你想要的东西。以下是摘要：

1-将此添加到Manifest：

< uses-feature android:name="android.hardware.camera" android:required="true" />

2-将此行添加到您的班级：

static final int REQUEST_IMAGE_CAPTURE = 1;

3-在你要打开相机的地方调用此方法：

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }
}

4-覆盖onActivityResult：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");

        ImageView ivImage = (ImageView) findViewById(R.id.ivImage);
        ivImage.setImageBitmap(imageBitmap);
    }
}

我希望它可以帮到你。

如何在从相机拍摄的照片后预览图像视图中的图像

2 个答案: