ListView 2

AndroidTraining/app/src/main/AndroidManifest.xml

@@ -31,6 +31,7 @@
         <activity android:name=".TrainingSpinnerActivity" />
         <activity android:name=".TrainingRadioActivity" />
         <activity android:name=".TrainingViewModelActivity" />
+        <activity android:name=".TrainingListViewActivity2" />
     </application>
 
 </manifest>

AndroidTraining/app/src/main/java/com/hatenablog/atuyan39/androidtraining/MainActivity.java

@@ -27,7 +27,8 @@ public class MainActivity extends AppCompatActivity {
             "Dialog",
             "Spinner",
             "Radio",
-            "ViewModel"
+            "ViewModel",
+            "ListView2"
     };
 
     @Override
@@ -93,6 +94,9 @@ private void startTrainingActivity(@NonNull String text) {
             case "ViewModel":
                 intent = new Intent(this, TrainingViewModelActivity.class);
                 break;
+            case "ListView2":
+                intent = new Intent(this, TrainingListViewActivity2.class);
+                break;
             default:
                 Log.d(getPackageName(), "There is no training activity!");
                 return;

AndroidTraining/app/src/main/java/com/hatenablog/atuyan39/androidtraining/TrainingListViewActivity2.java

@@ -0,0 +1,38 @@
+package com.hatenablog.atuyan39.androidtraining;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.Bundle;
+import android.widget.ListView;
+
+import com.hatenablog.atuyan39.androidtraining.adapter.ImageTextListAdapter;
+import com.hatenablog.atuyan39.androidtraining.view.ImageTextListItem;
+
+import java.util.ArrayList;
+
+public class TrainingListViewActivity2 extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_training_list_view_actvity2);
+
+        // ListViewを取得
+        ListView listView = findViewById(R.id.list_view_2);
+
+        // リストに表示するアイテムを作成
+        ArrayList<ImageTextListItem> listItems = new ArrayList<>();
+        for (int i = 0; i < 3; i++) {
+            Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.gohan);
+            String text = "List item " + i;
+            ImageTextListItem item = new ImageTextListItem(image, text);
+            listItems.add(item);
+        }
+
+        // 作成したリストを表示する
+        ImageTextListAdapter adapter = new ImageTextListAdapter(this, R.layout.image_text_list_item, listItems);
+        listView.setAdapter(adapter);
+    }
+}

AndroidTraining/app/src/main/java/com/hatenablog/atuyan39/androidtraining/adapter/ImageTextListAdapter.java

@@ -0,0 +1,66 @@
+package com.hatenablog.atuyan39.androidtraining.adapter;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.hatenablog.atuyan39.androidtraining.R;
+import com.hatenablog.atuyan39.androidtraining.view.ImageTextListItem;
+
+import java.util.List;
+
+/**
+ * {@link ImageTextListItem}のアダプター。
+ */
+public class ImageTextListAdapter extends ArrayAdapter<ImageTextListItem> {
+
+    private final int mResource;
+    private final List<ImageTextListItem> mItems;
+    private final LayoutInflater mInflater;
+
+    /**
+     * {@inheritDoc}
+     */
+    public ImageTextListAdapter(@NonNull Context context, int resource, @NonNull List<ImageTextListItem> items) {
+        super(context, resource, items);
+
+        mResource = resource;
+        mItems = items;
+        mInflater = LayoutInflater.from(context);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @NonNull
+    @Override
+    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
+        View view;
+
+        if (convertView != null) {
+            view = convertView;
+        } else {
+            view = mInflater.inflate(mResource, null);
+        }
+
+        // リストに表示するアイテムを取得
+        ImageTextListItem item = mItems.get(position);
+
+        // Imageを設定
+        ImageView image = view.findViewById(R.id.list_item_image);
+        image.setImageBitmap(item.getImage());
+
+        // Textを設定
+        TextView text = view.findViewById(R.id.list_item_text);
+        text.setText(item.getText());
+
+        return view;
+    }
+}

AndroidTraining/app/src/main/java/com/hatenablog/atuyan39/androidtraining/view/ImageTextListItem.java

@@ -0,0 +1,41 @@
+package com.hatenablog.atuyan39.androidtraining.view;
+
+import android.graphics.Bitmap;
+
+import androidx.annotation.NonNull;
+
+/**
+ * ImageViewとTextが配置されたリストに使うアイテム
+ */
+public class ImageTextListItem {
+    private Bitmap mImage;
+    private String mText;
+
+    /**
+     * Constructor.
+     *
+     * @param image 画像
+     * @param text テキスト
+     */
+    public ImageTextListItem(@NonNull Bitmap image, @NonNull String text) {
+        mImage = image;
+        mText = text;
+    }
+
+    // alt + insert(Getter and Setter)で自動追加できる
+    public Bitmap getImage() {
+        return mImage;
+    }
+
+    public void setImage(Bitmap mImage) {
+        this.mImage = mImage;
+    }
+
+    public String getText() {
+        return mText;
+    }
+
+    public void setText(String mText) {
+        this.mText = mText;
+    }
+}

AndroidTraining/app/src/main/res/layout/activity_training_image_view.xml

@@ -13,6 +13,5 @@
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:srcCompat="@drawable/gohan" />
+        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>

AndroidTraining/app/src/main/res/layout/activity_training_list_view_actvity2.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".TrainingListViewActivity2">
+
+    <ListView
+        android:id="@+id/list_view_2"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>

AndroidTraining/app/src/main/res/layout/image_text_list_item.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="horizontal">
+
+    <ImageView
+        android:id="@+id/list_item_image"
+        android:layout_width="70dp"
+        android:layout_height="70dp"
+        app:srcCompat="@android:drawable/alert_dark_frame"
+        android:contentDescription="@string/list_item_image_description" />
+
+    <TextView
+        android:id="@+id/list_item_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_vertical" />
+</LinearLayout>

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

@@ -56,4 +56,6 @@
     <string name="radio_1_blood_type_ab">AB型</string>
     <!-- ViewModel 1 -->
     <string name="vm1_button_text">Start Count UP!</string>
+    <!-- ListView 2 -->
+    <string name="list_item_image_description">Image</string>
 </resources>