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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
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//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
import android.support.v7.widget.RecyclerView; import android.view.View; import com.facebook.drawee.view.SimpleDraweeView; import com.spl.dell.fresco_photowall.R; /** * Created by dell on 2018/3/8. */ public class MyViewHolder extends RecyclerView.ViewHolder { public SimpleDraweeView simpleDraweeView; public MyViewHolder(View itemView) { super(itemView); simpleDraweeView = itemView.findViewById(R.id.sdv); } }
MyRecyclerViewAdapter
import android.content.Context; import android.net.Uri; import android.support.v7.widget.RecyclerView; import android.view.View; import android.view.ViewGroup; import com.spl.dell.fresco_photowall.R; import com.spl.dell.fresco_photowall.recyclerview_adapter.viewholder.MyViewHolder; import java.io.File; import java.util.List; /** * Created by dell on 2018/3/8. */ public class MyRecyclerViewAdapter extends RecyclerView.Adapter{ Context context; List list; public MyRecyclerViewAdapter(Context context, List list) { this.context = context; this.list = list; } @Override public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = View.inflate(context, R.layout.fresco_item, null); MyViewHolder viewHolder = new MyViewHolder(view); return viewHolder; } @Override public void onBindViewHolder(MyViewHolder holder, final int position) { Uri uri = Uri.fromFile(new File(list.get(position))); holder.simpleDraweeView.setImageURI(uri); holder.simpleDraweeView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { onRecyclerItemClick.onItemClicklistener(position); } }); } public void setOnItemClick(onRecyclerItemClick onRecyclerItemClick){ this.onRecyclerItemClick = onRecyclerItemClick; } @Override public int getItemCount() { return list.size(); } onRecyclerItemClick onRecyclerItemClick; public interface onRecyclerItemClick{ void onItemClicklistener(int position); } }
MyApp
import android.app.Application; import com.facebook.drawee.backends.pipeline.Fresco; /** * Created by dell on 2018/3/8. */ public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); Fresco.initialize(this); } }
ZoomImageActivity
import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import com.facebook.drawee.view.SimpleDraweeView; import java.io.File; public class ZoomImageActivity extends AppCompatActivity { private SimpleDraweeView sdv; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getSupportActionBar().hide(); setContentView(R.layout.activity_zoom_image); Intent intent = getIntent(); String imgurl = intent.getStringExtra("imgurl"); Uri uri = Uri.fromFile(new File(imgurl)); sdv = (SimpleDraweeView) findViewById(R.id.img_sdv); sdv.setImageURI(uri); } }
MainActivity
import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.provider.MediaStore; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.OrientationHelper; import android.support.v7.widget.RecyclerView; import com.spl.dell.fresco_photowall.recyclerview_adapter.MyRecyclerViewAdapter; import java.io.File; import java.util.ArrayList; import java.util.List; public class MainActivity extends AppCompatActivity { private RecyclerView recycler; private Listdocs = new ArrayList<>(); @Override protected void onCreate(Bundle savedInstanceState) { 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(); } private void initData() { Cursor cursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null, null); while(cursor.moveToNext()){ String paths = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA)); File file = new File(paths); String absolutePath = file.getAbsolutePath(); docs.add(absolutePath); } cursor.close(); // for(int i = 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创新互联。