我正在尝试创建一个应用，您可以在其中添加移动设备中的个人资料图片，然后将其保存到firebase，并尽可能高效地从firebase检索它。
几个问题：
1：这些大的约会应用程序（如bumble / tinder）如何创建编辑个人资料图像UI，您可以在其中上传个人资料图像并重新排列它们？他们是否将卡片视图放置到网格视图中，以查看这些卡片如何被拖动以重新排列位置？此外，他们通常会附加一个小的x按钮来删除图片，因此它是Cardview，对吧？
我目前正在使用ImageViews进行测试，并希望合并添加更多内容的功能，但是我的代码很糟糕，如果我返回页面并添加新图像，它将覆盖Firebase DB中的图像。
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".SettingsActivity"
android:orientation="vertical">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/back"
android:text="Back"
android:layout_marginBottom="20sp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20sp"
android:orientation="horizontal">
<ImageView
android:layout_width="100sp"
android:layout_height="100sp"
android:id="@+id/image1"
android:src="@mipmap/ic_launcher"
android:layout_margin="20sp"
android:layout_gravity="start"
/>
<ImageView
android:layout_width="100sp"
android:layout_height="100sp"
android:id="@+id/image2"
android:src="@mipmap/ic_launcher"
android:layout_margin="20sp"
android:layout_gravity="center_horizontal"
/>
<ImageView
android:layout_width="100sp"
android:layout_height="100sp"
android:id="@+id/image3"
android:src="@mipmap/ic_launcher"
android:layout_margin="20sp"
android:layout_gravity="end"
/>
</LinearLayout>
public class SettingsActivity extends AppCompatActivity {
private Button mBack;
private ImageView mImage1, mImage2, mImage3;
private FirebaseAuth mAuth;
private DatabaseReference mUserDb, mTagsDb;
private String userId, phone, image1Url, image2Url, image3Url, userSex;
private Uri resultUri1, resultUri2, resultUri3;
private ArrayList<Uri> resultUri = new ArrayList<Uri>();
private ArrayList<ImageView> imageViewsList = new ArrayList<ImageView>();
final int MaxTags = 5;
final int MaxImages = 3;
@Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
mImage1 = findViewById(R.id.image1);
mImage2 = findViewById(R.id.image2);
mImage3 = findViewById(R.id.image3);
mBack = findViewById(R.id.back);
mAuth = FirebaseAuth.getInstance();
userId = mAuth.getCurrentUser().getUid();
mUserDb = FirebaseDatabase.getInstance().getReference().child("Users").child(userId);
getUserInfo();
mImage1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 1);
}
});
mImage2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 2);
}
});
mImage3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 3);
}
});
mBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
saveUserInformation();
finish();
}
});
private void saveUserInformation() {
phone = mPhoneField.getText().toString();
Map userInfo = new HashMap();
userInfo.put("phone", phone);
mUserDb.updateChildren(userInfo);
if(resultUri != null){
for(int i = 0; i < resultUri.size(); i++)
{ String num = String.valueOf(i);
final StorageReference filePath = FirebaseStorage.getInstance().getReference().child("profileImages").child(userId).child(num);
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplication().getContentResolver(), resultUri.get(i));
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
byte[] data = baos.toByteArray();
UploadTask uploadTask = filePath.putBytes(data);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
finish();
}
});
final int finalI = i+1;
uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
filePath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Map newImage = new HashMap();
newImage.put("image"+ finalI +"Url", uri.toString());
mUserDb.updateChildren(newImage);
finish();
return;
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
finish();
return;
}
});
}
});
}
}else{
finish();
}
}
ArrayAdapter<String> values;
private void getUserInfo() {
mUserDb.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists() && dataSnapshot.getChildrenCount()>0){
Map<String, Object> map = (Map<String, Object>) dataSnapshot.getValue();
if(map.get("phone") != null){
phone = map.get("phone").toString();
mPhoneField.setText(phone);
}
if(map.get("sex") != null){
userSex = map.get("sex").toString();
}
Glide.clear(mImage1);
Glide.clear(mImage2);
Glide.clear(mImage3);
if(MaxImages == 3) {
imageViewsList.add(mImage1);
imageViewsList.add(mImage2);
imageViewsList.add(mImage3);
}
for(int i = 0; i < MaxImages; i ++)
{
int b = i+1;
if(map.get("image"+b+"Url") != null){
String url = map.get("image"+b+"Url").toString();
switch(url){
case "default":
imageViewsList.get(i).setImageResource(R.mipmap.ic_launcher);
//Glide.with(getApplication()).load(R.mipmap.ic_launcher).into(mImage1);
break;
default:
Glide.with(getApplication()).load(url).into(imageViewsList.get(i));
break;
}
}
}
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
resultUri1 = imageUri;
mImage1.setImageURI(resultUri1);
resultUri.add(resultUri1);
}
if(requestCode == 2 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
resultUri2 = imageUri;
mImage2.setImageURI(resultUri2);
resultUri.add(resultUri2);
}
if(requestCode == 3 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
resultUri3 = imageUri;
mImage3.setImageURI(resultUri3);
resultUri.add(resultUri3);
}
}
}
当前，我可以将图像上载到imageviews并将其保存到firebase，但是例如，如果我上载2张图像，然后保存并返回以上传第3张图像，则该图像会覆盖图像1。这样吗？
答案 0 :(得分：0)
因此，在再次查看我可以使用的其他应用程序之后，我意识到，似乎在您选择了手机图片库的onResultActivity之后，它们会将图像上传到了Firebase。因此，我简化了代码以实现相同效果，并且效果更好。代码现在可以使用，但是我只需要调整图像大小以适合图像视图即可，除此之外，没有任何抱怨。
如果您有更好，更高效的代码编写方式，请发表评论，效率是关键，我将不胜感激。
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings);
mImage1 = findViewById(R.id.image1);
mImage2 = findViewById(R.id.image2);
mImage3 = findViewById(R.id.image3);
mAuth = FirebaseAuth.getInstance();
userId = mAuth.getCurrentUser().getUid();
mUserDb = FirebaseDatabase.getInstance().getReference().child("Users").child(userId);
getUserInfo();
getUserTags();
mImage1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 1);
}
});
mImage2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 2);
}
});
mImage3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 3);
}
});
private void getUserInfo() {
mUserDb.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if(dataSnapshot.exists() && dataSnapshot.getChildrenCount()>0){
Glide.clear(mImage1);
if(map.get("image1Url") != null){
image1Url = map.get("image1Url").toString();
switch(image1Url){
case "default":
mImage1.setImageResource(R.mipmap.ic_launcher);
//Glide.with(getApplication()).load(R.mipmap.ic_launcher).into(mImage1);
break;
default:
Glide.with(getApplication()).load(image1Url).into(mImage1);
break;
}
}
if(map.get("image2Url") != null){
image2Url = map.get("image2Url").toString();
switch(image2Url){
case "default":
mImage2.setImageResource(R.mipmap.ic_launcher);
//Glide.with(getApplication()).load(R.mipmap.ic_launcher).into(mImage1);
break;
default:
Glide.with(getApplication()).load(image2Url).into(mImage2);
break;
}
}
if(map.get("image3Url") != null){
image3Url = map.get("image3Url").toString();
switch(image3Url){
case "default":
mImage3.setImageResource(R.mipmap.ic_launcher);
//Glide.with(getApplication()).load(R.mipmap.ic_launcher).into(mImage1);
break;
default:
Glide.with(getApplication()).load(image3Url).into(mImage3);
break;
}
}
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
final Uri resultUri = imageUri;
if(resultUri != null){
final StorageReference filePath = FirebaseStorage.getInstance().getReference().child("profileImages").child(userId).child("image1");
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplication().getContentResolver(), resultUri);
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
byte[] databytes = baos.toByteArray();
UploadTask uploadTask = filePath.putBytes(databytes);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
filePath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Map newImage = new HashMap();
newImage.put("image1Url", uri.toString());
mUserDb.updateChildren(newImage);
mImage1.setImageURI(resultUri);
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Successful!", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
}
});
}else{
finish();
}
}
if(requestCode == 2 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
final Uri resultUri = imageUri;
if(resultUri != null){
final StorageReference filePath = FirebaseStorage.getInstance().getReference().child("profileImages").child(userId).child("image2");
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplication().getContentResolver(), resultUri);
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
byte[] databytes = baos.toByteArray();
UploadTask uploadTask = filePath.putBytes(databytes);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
filePath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Map newImage = new HashMap();
newImage.put("image2Url", uri.toString());
mUserDb.updateChildren(newImage);
mImage2.setImageURI(resultUri);
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Successful!", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
}
});
}else{
finish();
}
}
if(requestCode == 3 && resultCode == Activity.RESULT_OK){
final Uri imageUri = data.getData();
final Uri resultUri = imageUri;
if(resultUri != null){
final StorageReference filePath = FirebaseStorage.getInstance().getReference().child("profileImages").child(userId).child("image3");
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplication().getContentResolver(), resultUri);
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 20, baos);
byte[] databytes = baos.toByteArray();
UploadTask uploadTask = filePath.putBytes(databytes);
uploadTask.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
uploadTask.addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
@Override
public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
filePath.getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>() {
@Override
public void onSuccess(Uri uri) {
Map newImage = new HashMap();
newImage.put("image3Url", uri.toString());
mUserDb.updateChildren(newImage);
mImage3.setImageURI(resultUri);
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Successful!", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception exception) {
Toast toast = Toast.makeText(SettingsActivity.this, "Upload Failed! Please try again", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
});
}
});
}else{
finish();
}
}
}