【发布时间】：2016-12-29 09:03:45
【问题描述】：
我正在开发一个简单的博客应用程序，该应用程序允许用户将照片从手机图库和描述上传到 Firebase 服务器。我正在尝试修改我当前的项目以允许用户从相机捕获照片并将其上传到 firebase 服务器。
目前，我可以将我捕获的图像显示到 imagebutton 中，但是我无法将我的图像发布到 firebase 服务器（“提交帖子”按钮对我的 onclick 功能没有反应）。
我怀疑我的 startPosting() 函数中存在一些错误，或者我没有正确编码图像？请帮忙。
package simpleblog2.emily.example.com.simpleblog2;
import android.app.ProgressDialog;
import android.content.ContentProvider;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.Image;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Toast;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.storage.FirebaseStorage;
import com.google.firebase.storage.StorageReference;
import com.google.firebase.storage.UploadTask;
import com.squareup.picasso.Picasso;
import com.theartofdev.edmodo.cropper.CropImage;
import java.io.File;
public class PostActivity extends AppCompatActivity {
private ImageButton mSelectImage;
private EditText mPostTitle;
private EditText mPostDesc;
private Button mSubmitBtn;
private ProgressDialog mProgress;
private DatabaseReference mDatabase;
private Uri mImageUri = null;
private static final int GALLERY_REQUEST = 1;
private static final int CAMERA_REQUEST_CODE = 1;
private StorageReference mStorage;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
mStorage = FirebaseStorage.getInstance().getReference();
mDatabase = FirebaseDatabase.getInstance().getReference().child("Blog");
mSelectImage = (ImageButton) findViewById(R.id.imageSelect);
mPostTitle = (EditText) findViewById(R.id.titleField);
mPostDesc = (EditText) findViewById(R.id.descField);
mSubmitBtn = (Button) findViewById(R.id.submitBtn);
mProgress = new ProgressDialog(this);
mSelectImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent1 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent1, CAMERA_REQUEST_CODE);
intent1.setType("image/*");
/*
Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, GALLERY_REQUEST);
*/
}
});
mSubmitBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startPosting();
}
});
}
private void startPosting() {
mProgress.setMessage("Posting to blog...");
final String title_val = mPostTitle.getText().toString().trim();
final String desc_val = mPostDesc.getText().toString().trim();
if (!TextUtils.isEmpty(title_val) && !TextUtils.isEmpty(desc_val) && mImageUri != null) {
mProgress.show();
StorageReference filepath = mStorage.child("Blog_Images").child(mImageUri.getLastPathSegment());
filepath.putFile(mImageUri).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
Uri downloadUrl = taskSnapshot.getDownloadUrl();
DatabaseReference newPost = mDatabase.push();
newPost.child("title").setValue(title_val);
newPost.child("desc").setValue(desc_val);
newPost.child("image").setValue(downloadUrl.toString());
mProgress.dismiss();
startActivity(new Intent(PostActivity.this, MainActivity.class));
}
});
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if(requestCode == GALLERY_REQUEST && resultCode == RESULT_OK){
if (requestCode == CAMERA_REQUEST_CODE && resultCode == RESULT_OK) {
/* mImageUri = data.getData();
mSelectImage.setImageURI(mImageUri);
CropImage.activity(mImageUri)
.setGuidelines(CropImageView.Guidelines.ON)
.start(this);
*/
Bitmap mImageUri = (Bitmap) data.getExtras().get("data");
mSelectImage.setImageBitmap(mImageUri);
}
if (requestCode == CropImage.CROP_IMAGE_ACTIVITY_REQUEST_CODE) {
CropImage.ActivityResult result = CropImage.getActivityResult(data);
if (resultCode == RESULT_OK) {
Uri resultUri = result.getUri();
mSelectImage.setImageURI(resultUri);
} else if (resultCode == CropImage.CROP_IMAGE_ACTIVITY_RESULT_ERROR_CODE) {
Exception error = result.getError();
}
}
}
}
【问题讨论】：
-
@DaminiMehra 你的答案是一个新函数，所以这个函数是替换我的 startPosting() 函数？我的代码做错了什么？
标签： android firebase android-camera firebase-storage