From 2a1eafa59628abfc73862da9f476221addf91f9b Mon Sep 17 00:00:00 2001 From: unknown Date: Wed, 23 Dec 2020 18:49:50 +0800 Subject: [PATCH] =?UTF-8?q?#6=20#71=20=E7=AC=AC6=E6=AC=A1=E5=AE=9E?= =?UTF-8?q?=E9=AA=8C?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Moment1814080903202Activity.java | 169 +++++++++--------- students/net1814080903202/RoundTransform.java | 53 ++++++ 2 files changed, 140 insertions(+), 82 deletions(-) create mode 100644 students/net1814080903202/RoundTransform.java diff --git a/students/net1814080903202/Moment1814080903202Activity.java b/students/net1814080903202/Moment1814080903202Activity.java index e799ff11b..b06ed8559 100644 --- a/students/net1814080903202/Moment1814080903202Activity.java +++ b/students/net1814080903202/Moment1814080903202Activity.java @@ -4,7 +4,14 @@ import android.content.Context; import android.content.Intent; +import android.content.res.Resources; +import android.graphics.Bitmap; +import android.graphics.BitmapShader; +import android.graphics.Canvas; +import android.graphics.Paint; +import android.graphics.RectF; import android.os.Bundle; +import android.os.StrictMode; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; @@ -12,22 +19,74 @@ import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ListView; +import android.widget.SimpleAdapter; import android.widget.TextView; +import com.bumptech.glide.Glide; +import com.bumptech.glide.request.RequestOptions; +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.reflect.TypeToken; + +import java.io.BufferedReader; +import java.io.InputStreamReader; +import java.net.HttpURLConnection; +import java.net.URL; +import java.net.URLDecoder; +import java.security.MessageDigest; +import java.util.List; +import java.util.Map; + public class Moment1814080903202Activity extends AppCompatActivity implements View.OnClickListener{ private ListView listView; private ImageButton back; private ImageButton scan; + private SimpleAdapter simpleAdapter; + private List> resultlist; + private Gson gson; + private GsonBuilder gsonBuilder; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); + StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build(); + StrictMode.setThreadPolicy(policy); setContentView(R.layout.activity_moment1814080903202); listView = findViewById(R.id.MomentList); back = findViewById(R.id.back); scan = findViewById(R.id.scan); back.setOnClickListener(this); scan.setOnClickListener(this); - listView.setAdapter(new MomentAdapter(this)); + gsonBuilder=new GsonBuilder(); + gson=gsonBuilder.create(); + runOnUiThread(new Runnable() { + @Override + public void run() { + String jsonText = getJson(); + resultlist = gson.fromJson(jsonText,new TypeToken>>(){}.getType()); + System.out.println(resultlist); + } + }); + simpleAdapter = new SimpleAdapter(Moment1814080903202Activity.this,resultlist, + R.layout.moment_listview_item, + new String[]{"name","time","head","content","img1","img2","img3"}, + new int[]{R.id.name,R.id.time,R.id.head,R.id.content,R.id.img1,R.id.img2,R.id.img3}); + simpleAdapter.setViewBinder(new SimpleAdapter.ViewBinder() { + @Override + public boolean setViewValue(View view, Object data, String textRepresentation) { + if (view instanceof ImageView) { + ImageView iv = (ImageView) view; + if(iv.getId() == R.id.head){ + RequestOptions options = new RequestOptions().centerCrop() .transform(new RoundTransform(iv.getContext(),30)); + Glide.with(iv.getContext()).load((String) data).apply(options).into(iv); + }else{ + Glide.with(iv.getContext()).load((String) data).into(iv); + } + return true; + } + return false; + } + }); + listView.setAdapter(simpleAdapter); } @Override @@ -43,87 +102,33 @@ public void onClick(View v) { break; } } -} - -class MomentAdapter extends BaseAdapter{ - private Context mContext; - private LayoutInflater layoutInflater; - public MomentAdapter(Context context){ - mContext = context; - layoutInflater = LayoutInflater.from(mContext); - } - @Override - public int getCount() { - return 2; - } - - @Override - public Object getItem(int position) { - return null; - } - @Override - public long getItemId(int position) { - return 0; - } - public static class ViewHolder{ - public ImageView head; - public TextView name; - public TextView time; - public TextView content; - public ImageView img1; - public ImageView img2; - public ImageView img3; - } - @Override - public View getView(int position, View convertView, ViewGroup parent) { - ViewHolder viewHolder = null; - if(convertView == null){ - convertView = layoutInflater.inflate(R.layout.moment_listview_item,null); - viewHolder = new ViewHolder(); - viewHolder.head = convertView.findViewById(R.id.head); - viewHolder.name = convertView.findViewById(R.id.name); - viewHolder.time = convertView.findViewById(R.id.time); - viewHolder.content = convertView.findViewById(R.id.content); - viewHolder.img1 = convertView.findViewById(R.id.img1); - viewHolder.img2 = convertView.findViewById(R.id.img2); - viewHolder.img3 = convertView.findViewById(R.id.img3); - convertView.setTag(viewHolder); - }else{ - viewHolder = (ViewHolder) convertView.getTag(); - } - viewHolder.head.setBackgroundResource(heads[position]); - viewHolder.name.setText(names[position]); - viewHolder.time.setText(times[position]); - viewHolder.content.setText(contents[position]); - viewHolder.img1.setBackgroundResource(img[0]); - viewHolder.img2.setBackgroundResource(img[1]); - if (position != 1){ - viewHolder.img3.setBackgroundResource(img[0]); + private String getJson(){ + String jsonurl = "http://49.234.91.116:80/android/Moment.json"; + String jsonText = new String(); + try { + URL url = new URL(jsonurl); + // 创建网络连接 + HttpURLConnection connection = (HttpURLConnection) url.openConnection(); + connection.setRequestProperty("Content-Type", "application/json"); + connection.connect(); + // 以流的方式去读取网络数据：字符流 / 字节流 + BufferedReader reader = new BufferedReader(new + InputStreamReader(connection.getInputStream())); + String lines; + StringBuffer sb = new StringBuffer(""); + while ((lines = reader.readLine()) != null) { + lines = URLDecoder.decode(lines, "utf-8"); + sb.append(lines); + } + System.out.println(sb); + jsonText = sb.toString(); + reader.close(); + // 断开连接 + connection.disconnect(); + } catch (Exception e) { + e.printStackTrace(); } - - return convertView; + return jsonText; } - public Integer[] heads = { - R.drawable.head1, - R.drawable.head2, - - }; - public String[] names = { - "Lunette", - "viices", - }; - public String[] times = { - "2小时前", - "3小时前", - }; - public String[] contents = { - "123", - "456" - }; - public Integer[] img = { - R.drawable.head1, - R.drawable.head2, - - }; -} \ No newline at end of file +} diff --git a/students/net1814080903202/RoundTransform.java b/students/net1814080903202/RoundTransform.java new file mode 100644 index 000000000..11f88292f --- /dev/null +++ b/students/net1814080903202/RoundTransform.java @@ -0,0 +1,53 @@ +package edu.hzuapps.androidlabs.net1814080903202; + +import android.content.Context; +import android.content.res.Resources; +import android.graphics.Bitmap; +import android.graphics.BitmapShader; +import android.graphics.Canvas; +import android.graphics.Paint; +import android.graphics.RectF; + +import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool; +import com.bumptech.glide.load.resource.bitmap.BitmapTransformation; +import com.bumptech.glide.load.resource.bitmap.TransformationUtils; + +import java.security.MessageDigest; + +public class RoundTransform extends BitmapTransformation { + private static float radius = 0f; + public RoundTransform(Context context, int dp) { + this.radius = Resources.getSystem().getDisplayMetrics().density * dp; + } + + @Override + protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) { + Bitmap bitmap = TransformationUtils.centerCrop(pool, toTransform, outWidth, outHeight); + return roundCrop(pool, bitmap); + } + + private static Bitmap roundCrop(BitmapPool pool, Bitmap source) { + if (source == null) return null; + Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888); + if (result == null) { + result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888); + } + + Canvas canvas = new Canvas(result); + Paint paint = new Paint(); + paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP)); + paint.setAntiAlias(true); + RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight()); + canvas.drawRoundRect(rectF, radius, radius, paint); + return result; + } + + public String getId() { + return getClass().getName() + Math.round(radius); + } + + @Override + public void updateDiskCacheKey(MessageDigest messageDigest) { + + } +}