Add proguard rule

app/build.gradle

@@ -10,13 +10,19 @@ android {
         targetSdkVersion 30
         versionCode 1
         versionName "1.0"
+
+        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),
+                'proguard-gson.pro', 'proguard-rules.pro', 'proguard-sqlite.pro',
+                'proguard-okhttp.pro', 'proguard-retrofit2.pro'
+
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
         release {
-            minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            debuggable false
+            minifyEnabled true
+            shrinkResources true
         }
     }
 
@@ -35,7 +41,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'androidx.recyclerview:recyclerview:1.2.0'
-    implementation 'com.google.android.material:material:1.4.0-alpha02'
+    implementation 'com.google.android.material:material:1.4.0-beta01'
 
     implementation 'com.google.android.gms:play-services-maps:17.0.1'
     implementation 'com.google.android.gms:play-services-location:18.0.0'

app/proguard-gson.pro

@@ -0,0 +1,25 @@
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all of it.
+-keepattributes Signature
+
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+
+# Gson specific classes
+-dontwarn sun.misc.**
+#-keep class com.google.gson.stream.** { *; }
+
+# Application classes that will be serialized/deserialized over Gson
+-keepclassmembers class com.alfred.model.** { *; }
+
+# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
+# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
+-keep class * extends com.google.gson.TypeAdapter
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+# Prevent R8 from leaving Data object members always null
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}

app/proguard-sqlite.pro

@@ -0,0 +1,2 @@
+-keep,includedescriptorclasses class net.sqlcipher.** { *; }
+-keep,includedescriptorclasses interface net.sqlcipher.** { *; }

app/proguard-square-okhttp.pro

@@ -0,0 +1,11 @@
+# JSR 305 annotations are for embedding nullability information.
+-dontwarn javax.annotation.**
+
+# A resource is loaded with a relative path so the package of this class must be preserved.
+-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
+
+# Animal Sniffer compileOnly dependency to ensure APIs are compatible with older versions of Java.
+-dontwarn org.codehaus.mojo.animal_sniffer.*
+
+# OkHttp platform used only on JVM and when Conscrypt dependency is available.
+-dontwarn okhttp3.internal.platform.ConscryptPlatform

app/proguard-square-retrofit2.pro

@@ -0,0 +1,29 @@
+# Retrofit does reflection on generic parameters. InnerClasses is required to use Signature and
+# EnclosingMethod is required to use InnerClasses.
+-keepattributes Signature, InnerClasses, EnclosingMethod
+
+# Retrofit does reflection on method and parameter annotations.
+-keepattributes RuntimeVisibleAnnotations, RuntimeVisibleParameterAnnotations
+
+# Retain service method parameters when optimizing.
+-keepclassmembers,allowshrinking,allowobfuscation interface * {
+    @retrofit2.http.* <methods>;
+}
+
+# Ignore annotation used for build tooling.
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
+
+# Ignore JSR 305 annotations for embedding nullability information.
+-dontwarn javax.annotation.**
+
+# Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
+-dontwarn kotlin.Unit
+
+# Top-level functions that can only be used by Kotlin.
+-dontwarn retrofit2.KotlinExtensions
+-dontwarn retrofit2.KotlinExtensions$*
+
+# With R8 full mode, it sees no subtypes of Retrofit interfaces since they are created with a Proxy
+# and replaces all potential values with null. Explicitly keeping the interfaces prevents this.
+-if interface * { @retrofit2.http.* <methods>; }
+-keep,allowobfuscation interface <1>

app/src/main/java/com/a1573595/parkingdemo/main/MainActivity.java

@@ -142,6 +142,16 @@ public void onError(Throwable e) {
         };
     }
 
+    @Override
+    public void showDownloadFailed() {
+        binding.tvDataset.setText(R.string.download_failed);
+    }
+
+    @Override
+    public void showDataConversionFailed() {
+        binding.tvDataset.setText(R.string.download_failed);
+    }
+
     private String convertLongToTime(long time) {
         Date date = new Date(time);
         SimpleDateFormat format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.getDefault());

app/src/main/java/com/a1573595/parkingdemo/main/MainPresenter.java

@@ -91,11 +91,13 @@ public void onSuccess(@NotNull ResponseBody responseBody) {
 
                             deleteDataSet(parkingList);
                         } catch (Exception ignored) {
+                            view.showDataConversionFailed();
                         }
                     }
 
                     @Override
                     public void onError(@NotNull Throwable e) {
+                        view.showDownloadFailed();
                     }
                 }));
     }

app/src/main/java/com/a1573595/parkingdemo/main/MainView.java

@@ -9,4 +9,8 @@ public interface MainView extends BaseView {
     void transitionToUpdate();
 
     DisposableSingleObserver<Parking[]> showDataSetInfo();
+
+    void showDownloadFailed();
+
+    void showDataConversionFailed();
 }

app/src/main/java/com/a1573595/parkingdemo/model/data/TCMSV_ALLDESC.java

@@ -1,26 +1,43 @@
 package com.a1573595.parkingdemo.model.data;
 
+import com.google.gson.annotations.SerializedName;
+
 public class TCMSV_ALLDESC {
+    @SerializedName("data")
     public Data data;
 
     public class Data {
         public String UPDATETIME;
+        @SerializedName("park")
         public Result[] park;
 
         public class Result {
+            @SerializedName("id")
             public String id;
+            @SerializedName("area")
             public String area; //
+            @SerializedName("name")
             public String name; //
+            @SerializedName("summary")
             public String summary;  //
+            @SerializedName("address")
             public String address;  //
+            @SerializedName("tel")
             public String tel;  //
+            @SerializedName("payex")
             public String payex;    //
             public String servicetime;  //  營業時間
+            @SerializedName("tw97x")
             public double tw97x;    //
+            @SerializedName("tw97y")
             public double tw97y;    //
+            @SerializedName("totalcar")
             public int totalcar; //轎車停車位
+            @SerializedName("totalmotor")
             public int totalmotor;   //機車停車位
+            @SerializedName("totalbike")
             public int totalbike;    //自行車停車位
+            @SerializedName("totalbus")
             public int totalbus;    //巴士停車位
             public String Pregnancy_First; //孕婦優先車位
             public String Handicap_First; //身障優先車位

app/src/main/res/values-zh-rTW/strings.xml

@@ -31,4 +31,6 @@
     <string name="update_finish">更新完成</string>
     <string name="query_hint">請輸入地址</string>
     <string name="press_again_to_exit">再按一次退出</string>
+    <string name="download_failed">下載失敗</string>
+    <string name="data_conversion_failed">資料轉換失敗</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -32,4 +32,6 @@
     <string name="update_finish">Update finish</string>
     <string name="query_hint">Enter address</string>
     <string name="press_again_to_exit">Press again to exit</string>
+    <string name="download_failed">download failed.</string>
+    <string name="data_conversion_failed">Data conversion failed.</string>
 </resources>