在RecyclerView中出现了onActivityResult的问题。

huangapple
go评论78阅读模式
英文:

issue onactivityresult in recyclerview

问题

以下是您提供的代码部分的翻译：

MainActivity（主活动）：

package com.example.myapuuuplication;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.content.Intent;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import com.sangcomz.fishbun.FishBun;
import com.sangcomz.fishbun.adapter.image.impl.GlideAdapter;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    Adapter adapter = new Adapter();
    List<Modell> uris = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RecyclerView rv = findViewById(R.id.rv);
        rv.setAdapter(adapter);
        rv.setLayoutManager(new LinearLayoutManager(this, RecyclerView.HORIZONTAL, false));

        Button btn = findViewById(R.id.button);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                openpicker();
            }
        });
    }

    private void openpicker() {
        FishBun.with(this)
                .setImageAdapter(new GlideAdapter())
                .setMaxCount(3)
                .setActionBarColor(Color.parseColor("#5D4037"))
                .startAlbum();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case FishBun.FISHBUN_REQUEST_CODE:
                if (resultCode == RESULT_OK) {
                    uris = data.getParcelableArrayListExtra(FishBun.INTENT_PATH);
                    adapter.setUris(uris);
                    break;
                }
        }
    }
}

Adapter（适配器）：

package com.example.myapuuuplication;

import android.content.Intent;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.sangcomz.fishbun.FishBun;

import java.util.ArrayList;
import java.util.List;

public class Adapter extends RecyclerView.Adapter<Adapter.VH> {

    List<Modell> uris = new ArrayList<>();

    public void setUris(List<Modell> uris) {
        this.uris = uris;
    }

    @NonNull
    @Override
    public VH onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.model, parent, false);
        return new VH(view);
    }

    @Override
    public void onBindViewHolder(@NonNull VH holder, int position) {
        Modell modell = uris.get(position);
        VH vh = holder;
        vh.img.setImageURI(modell.getImg());
    }

    @Override
    public int getItemCount() {
        return uris.size();
    }

    public class VH extends RecyclerView.ViewHolder {
        ImageView img;

        public VH(@NonNull View itemView) {
            super(itemView);
            img = itemView.findViewById(R.id.imgmodel);
        }
    }
}

Modell（模型）：

package com.example.myapuuuplication;

import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;

public class Modell implements Parcelable {
    Uri img;

    public Modell(Uri img) {
        this.img = img;
    }

    protected Modell(Parcel in) {
        img = in.readParcelable(Uri.class.getClassLoader());
    }

    public static final Creator<Modell> CREATOR = new Creator<Modell>() {
        @Override
        public Modell createFromParcel(Parcel in) {
            return new Modell(in);
        }

        @Override
        public Modell[] newArray(int size) {
            return new Modell[size];
        }
    };

    public Uri getImg() {
        return img;
    }

    public void setImg(Uri img) {
        this.img = img;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        parcel.writeParcelable(img, i);
    }
}

请注意，我已经按照您的要求只返回了翻译好的部分，没有包含其他内容。如果您有任何问题或需要进一步的帮助，请随时提问。

英文:

i want to add images from gallery and add to arraylist and show them into recyclerview

but cant use onactivityresult in adapter -_-

i used Fishbun for add images from gallery but when i clicking ok the images not showing in recyclerview

im new in android and dont know how to do that

here is my MainActivity:

package com.example.myapuuuplication;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Intent;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import com.sangcomz.fishbun.FishBun;
import com.sangcomz.fishbun.adapter.image.impl.GlideAdapter;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
Adapter adapter = new Adapter();
List&lt;Modell&gt; uris = new ArrayList&lt;&gt;();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView rv = findViewById(R.id.rv);
rv.setAdapter(adapter);
rv.setLayoutManager(new LinearLayoutManager(this,RecyclerView.HORIZONTAL,false));
Button btn = findViewById(R.id.button);
btn
.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
openpicker();
}
});
}
private void openpicker() {
FishBun.with(this).setImageAdapter(new GlideAdapter())
.setMaxCount(3)
.setActionBarColor(Color.parseColor(&quot;#5D4037&quot;))
.startAlbum();
}
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case FishBun.FISHBUN_REQUEST_CODE:
if (resultCode == RESULT_OK) {
uris = data.getParcelableArrayListExtra(FishBun.INTENT_PATH);
adapter.setUris(uris);
break;
}
}
}
}

Adapter:


package com.example.myapuuuplication;
import android.content.Intent;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.sangcomz.fishbun.FishBun;
import java.util.ArrayList;
import java.util.List;
import static android.app.Activity.RESULT_OK;
public class Adapter extends RecyclerView.Adapter&lt;Adapter.VH&gt; {
List&lt;Modell&gt; uris = new ArrayList&lt;&gt;();
public void setUris(List&lt;Modell&gt; uris) {
this.uris = uris;
}
@NonNull
@Override
public VH onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.model,parent,false);
return new VH(view);
}
@Override
public void onBindViewHolder(@NonNull VH holder, int position) {
Modell modell = uris.get(position);
VH vh = holder;
vh.img.setImageURI(modell.getImg());
}
@Override
public int getItemCount() {
return uris.size();
}
public class VH extends RecyclerView.ViewHolder{
ImageView img;
public VH(@NonNull View itemView) {
super(itemView);
img = itemView.findViewById(R.id.imgmodel);
}
}
}

And Model:

package com.example.myapuuuplication;
import android.net.Uri;
import android.os.Parcel;
import android.os.Parcelable;
public class Modell implements Parcelable {
Uri img;
public Modell(Uri img) {
this.img = img;
}
protected Modell(Parcel in) {
img = in.readParcelable(Uri.class.getClassLoader());
}
public static final Creator&lt;Modell&gt; CREATOR = new Creator&lt;Modell&gt;() {
@Override
public Modell createFromParcel(Parcel in) {
return new Modell(in);
}
@Override
public Modell[] newArray(int size) {
return new Modell[size];
}
};
public Uri getImg() {
return img;
}
public void setImg(Uri img) {
this.img = img;
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeParcelable(img, i);
}
}

答案1

得分: 1

你正在使用适配器设置

public void setUris(List<Modell> uris) {
    this.uris = uris;
}

但是你还必须让回收视图知道数据发生了变化。
为此，你需要修改函数 setUris，添加 notifyDataSetChanged()。

最终代码：

public void setUris(List<Modell> uris) {
    this.uris = uris;
    notifyDataSetChanged();
}
英文:

You are setting the adapter with

public void setUris(List&lt;Modell&gt; uris) {
this.uris = uris;
}

But you must also let the recycler view know that there is a change in the data.
For that you need to modify the function setUris to include notifyDataSetChanged()

Final code:

public void setUris(List&lt;Modell&gt; uris) {
this.uris = uris;
notifyDataSetChanged();
}

huangapple
  • 本文由 发表于 2020年8月19日 17:55:15
  • 转载请务必保留本文链接：https://go.coder-hub.com/63484445.html
  • android
  • android-recyclerview
  • java
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