我想用自动压缩的照相机拍摄照片或转换成更容易上传的格式。 之后,我想自动上传图像。如何在上传到Firebase之前压缩相机拍摄的图像?
希望你能帮助我。
这是我的代码:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mStorage = FirebaseStorage.getInstance().getReference();
mProgressDialog1 = new ProgressDialog(this);
mCamera = (ImageButton) findViewById(R.id.UpCamera);
mImageview = (ImageView) findViewById(R.id.imageView1);
mCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent1 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent1, CAMERA_REQUEST_CODE);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK){
Bitmap photo = (Bitmap) data.getExtras().get("data");
mImageview.setImageBitmap(photo);
Toast.makeText(MainActivity.this, "Uploading..", Toast.LENGTH_LONG).show();
mProgressDialog1.setMessage("Crop Image");
mProgressDialog1.show();
Uri uri1 = data.getData();
StorageReference filepath = mStorage.child("Tries").child(uri1.getLastPathSegment());
filepath.putFile(uri1).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
mProgressDialog1.dismiss();
Uri downloadUri = taskSnapshot.getDownloadUrl();
Picasso.with(MainActivity.this).load(downloadUri).fit().centerCrop().into(mImageview);
Toast.makeText(MainActivity.this, "Upload done!", Toast.LENGTH_LONG).show();
}
});
}
}
}
看[这里](https://firebase.google .com/docs/storage/android/upload-files)在Firebase参考中有一个如何上传位图的例子。在这个例子中有一个Bitmap.compress调用,您可以在其中指定压缩质量。 –
将您的文件上传到64base之前上传它: [http://stackoverflow.com/questions/36189503/take-picture-and-convert-to-base64](http://stackoverflow.com/questions/36189503/拍照和转换为base64) –
@IbrahimHaouari base64编码将使数据*更大*,不像Jessef所要求的那样小。 –