添加地震 Intent

heyblood · Jan 21, 2021 · b14692a · b14692a
1 parent 5574906
commit b14692a
Show file tree

Hide file tree

Showing 3 changed files with 55 additions and 9 deletions.
diff --git a/app/src/main/java/com/example/quakereport/Earthquake.java b/app/src/main/java/com/example/quakereport/Earthquake.java
@@ -1,15 +1,26 @@
 package com.example.quakereport;
 
 public class Earthquake {
-    /** 地震震级 */
+    /**
+     * 地震震级
+     */
     private double mag;
 
-    /** 地震位置（完整位置） */
+    /**
+     * 地震位置（完整位置）
+     */
     private String place;
 
-    /** Time of the earthquake */
+    /**
+     * Time of the earthquake
+     */
     private long timeInMilliseconds;
 
+    /**
+     * 地震的网站 URL
+     */
+    private String url;
+
     public double getMag() {
         return mag;
     }
@@ -25,16 +36,25 @@ public long getTimeInMilliseconds() {
         return timeInMilliseconds;
     }
 
+    /**
+     * 返回用于查找关于地震的更多信息的网站 URL。
+     */
+    public String getUrl() {
+        return url;
+    }
+
     /**
      * 构造一个新的 {@link Earthquake} 对象。
      *
-     * @param mag   表示地震的震级（大小）
-     * @param place 表示地震的城市位置
-     * @param timeInMilliseconds  表示地震发生时以毫秒（根据 Epoch）计的时间
+     * @param mag                表示地震的震级（大小）
+     * @param place              表示地震的城市位置
+     * @param timeInMilliseconds 表示地震发生时以毫秒（根据 Epoch）计的时间
+     * @param url                表示用于查找关于地震的更多详细信息的网站 URL
      */
-    public Earthquake(double mag, String place, long timeInMilliseconds) {
+    public Earthquake(double mag, String place, long timeInMilliseconds, String url) {
         this.mag = mag;
         this.place = place;
         this.timeInMilliseconds = timeInMilliseconds;
+        this.url = url;
     }
 }
diff --git a/app/src/main/java/com/example/quakereport/EarthquakeActivity.java b/app/src/main/java/com/example/quakereport/EarthquakeActivity.java
@@ -15,7 +15,11 @@
  */
 package com.example.quakereport;
 
+import android.content.Intent;
+import android.net.Uri;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 
@@ -39,10 +43,27 @@ protected void onCreate(Bundle savedInstanceState) {
         ListView earthquakeListView = (ListView) findViewById(R.id.list);
 
         // Create a new {@link ArrayAdapter} of earthquakes
-        EarthquakeAdapter adapter = new EarthquakeAdapter(this, earthquakes);
+        final EarthquakeAdapter adapter = new EarthquakeAdapter(this, earthquakes);
 
         // Set the adapter on the {@link ListView}
         // so the list can be populated in the user interface
         earthquakeListView.setAdapter(adapter);
+
+        earthquakeListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
+                // 查找单击的当前地震
+                Earthquake currentEarthquake = adapter.getItem(position);
+
+                // 将字符串 URL 转换为 URI 对象（以传递至 Intent 中 constructor)
+                Uri earthquakeUri = Uri.parse(currentEarthquake.getUrl());
+
+                // 创建一个新的 Intent 以查看地震 URI
+                Intent websiteIntent = new Intent(Intent.ACTION_VIEW, earthquakeUri);
+
+                // 发送 Intent 以启动新活动
+                startActivity(websiteIntent);
+            }
+        });
     }
 }
diff --git a/app/src/main/java/com/example/quakereport/QueryUtils.java b/app/src/main/java/com/example/quakereport/QueryUtils.java
@@ -66,7 +66,12 @@ public static ArrayList<Earthquake> extractEarthquakes() {
                 // Extract the value for the key called "time"
                 long earthquakeTime = properties.getLong("time");
 
-                Earthquake earthquake = new Earthquake(earthquakeMag, earthquakePlace, earthquakeTime);
+                // 提取名为 "url" 的键的值
+                String earthquakeUrl = properties.getString("url");
+
+                // 使用震级、地点、时间和来自 JSON 响应的 url，
+                // 创建一个新的 {@link Earthquake} 对象。
+                Earthquake earthquake = new Earthquake(earthquakeMag, earthquakePlace, earthquakeTime, earthquakeUrl);
 
                 earthquakes.add(earthquake);
             }