Fresco加载手机图片墙

2023-09-14 04:04:06 63

本文实例为大家分享了Android九宫格图片展示的具体代码，供大家参考，具体内容如下

//网络权限

//添加依赖

compile'com.android.support:appcompat-v7:26.+'
compile'com.android.support.constraint:constraint-layout:1.0.2'
compile'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile'com.squareup.retrofit2:retrofit:2.0.0-beta4'
compile'com.facebook.fresco:fresco:0.12.0'
testCompile'junit:junit:4.12'

布局文件

activity_main

activity_zoom_image

fresco_item

MyViewHolder

importandroid.support.v7.widget.RecyclerView;
importandroid.view.View;

importcom.facebook.drawee.view.SimpleDraweeView;
importcom.spl.dell.fresco_photowall.R;

/**
*Createdbydellon2018/3/8.
*/

publicclassMyViewHolderextendsRecyclerView.ViewHolder{

publicSimpleDraweeViewsimpleDraweeView;

publicMyViewHolder(ViewitemView){
super(itemView);
simpleDraweeView=itemView.findViewById(R.id.sdv);
}
}

MyRecyclerViewAdapter

importandroid.content.Context;
importandroid.net.Uri;
importandroid.support.v7.widget.RecyclerView;
importandroid.view.View;
importandroid.view.ViewGroup;

importcom.spl.dell.fresco_photowall.R;
importcom.spl.dell.fresco_photowall.recyclerview_adapter.viewholder.MyViewHolder;

importjava.io.File;
importjava.util.List;

/**
*Createdbydellon2018/3/8.
*/

publicclassMyRecyclerViewAdapterextendsRecyclerView.Adapter{

Contextcontext;
Listlist;

publicMyRecyclerViewAdapter(Contextcontext,Listlist){
this.context=context;
this.list=list;
}

@Override
publicMyViewHolderonCreateViewHolder(ViewGroupparent,intviewType){
Viewview=View.inflate(context,R.layout.fresco_item,null);
MyViewHolderviewHolder=newMyViewHolder(view);
returnviewHolder;
}

@Override
publicvoidonBindViewHolder(MyViewHolderholder,finalintposition){
Uriuri=Uri.fromFile(newFile(list.get(position)));
holder.simpleDraweeView.setImageURI(uri);


holder.simpleDraweeView.setOnClickListener(newView.OnClickListener(){
@Override
publicvoidonClick(Viewview){
onRecyclerItemClick.onItemClicklistener(position);
}
});
}

publicvoidsetOnItemClick(onRecyclerItemClickonRecyclerItemClick){
this.onRecyclerItemClick=onRecyclerItemClick;
}

@Override
publicintgetItemCount(){
returnlist.size();
}
onRecyclerItemClickonRecyclerItemClick;
publicinterfaceonRecyclerItemClick{
voidonItemClicklistener(intposition);
}

}

MyApp

importandroid.app.Application;

importcom.facebook.drawee.backends.pipeline.Fresco;

/**
*Createdbydellon2018/3/8.
*/

publicclassMyAppextendsApplication{
@Override
publicvoidonCreate(){
super.onCreate();
Fresco.initialize(this);
}
}

ZoomImageActivity

importandroid.content.Intent;
importandroid.net.Uri;
importandroid.os.Bundle;
importandroid.support.v7.app.AppCompatActivity;

importcom.facebook.drawee.view.SimpleDraweeView;

importjava.io.File;

publicclassZoomImageActivityextendsAppCompatActivity{

privateSimpleDraweeViewsdv;

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
setContentView(R.layout.activity_zoom_image);
Intentintent=getIntent();
Stringimgurl=intent.getStringExtra("imgurl");
Uriuri=Uri.fromFile(newFile(imgurl));
sdv=(SimpleDraweeView)findViewById(R.id.img_sdv);
sdv.setImageURI(uri);
}
}

MainActivity

importandroid.content.Intent;
importandroid.database.Cursor;
importandroid.os.Bundle;
importandroid.provider.MediaStore;
importandroid.support.v7.app.AppCompatActivity;
importandroid.support.v7.widget.GridLayoutManager;
importandroid.support.v7.widget.OrientationHelper;
importandroid.support.v7.widget.RecyclerView;

importcom.spl.dell.fresco_photowall.recyclerview_adapter.MyRecyclerViewAdapter;

importjava.io.File;
importjava.util.ArrayList;
importjava.util.List;

publicclassMainActivityextendsAppCompatActivity{

privateRecyclerViewrecycler;
privateListdocs=newArrayList<>();

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
setContentView(R.layout.activity_main);
initView();
//recyclerview的数据源需要从手机相册中获取
initData();
}

privatevoidinitData(){

Cursorcursor=getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,null,null,null,null);
while(cursor.moveToNext()){
Stringpaths=cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
Filefile=newFile(paths);
StringabsolutePath=file.getAbsolutePath();
docs.add(absolutePath);
}
cursor.close();

//for(inti=0;i
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

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