Glide and RecyclerView点滅

Question

小さなアプリを作成して問題を表示します。 こちらをご覧ください。https://github.com/Anton111111/ExampleGlideBlink

メインクラス：https://github.com/Anton111111/ExampleGlideBlink/blob/master/app/src/main/java/com/example/testglide/MainActivity.java

public class MainActivity extends AppCompatActivity { 

    private Adapter adapter; 
    private Handler handler; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     RecyclerView rv = (RecyclerView) findViewById(R.id.recycler_view); 
     rv.setHasFixedSize(true); 
     GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 2); 
     rv.setLayoutManager(gridLayoutManager); 

     ArrayList<String> items = new ArrayList<>(Arrays.asList(new String[]{ 
       "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", 
       "11", "12", "13", "14", "15", "16", "17", "18", "19", "20" 
     })); 

     adapter = new Adapter(this, items); 
     rv.setAdapter(adapter); 
     handler = new Handler(); 
     handler.postDelayed(r, 500); 
    } 

    Runnable r = new Runnable() { 
     @Override 
     public void run() { 
      Random rand = new Random(System.currentTimeMillis()); 
      handler.postDelayed(r, 500); 
      adapter.notifyItemChanged(rand.nextInt(4)); 
     } 
    }; 

    public class Adapter extends RecyclerView.Adapter { 

     private final Context ctx; 
     private ArrayList<String> items = new ArrayList<>(); 
     private int progress = 1; 

     public Adapter(Context context, ArrayList<String> items) { 
      this.items = items; 
      ctx = context; 
     } 

     @Override 
     public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
      View v = LayoutInflater.from(parent.getContext()) 
        .inflate(R.layout.item, parent, false); 
      Holder h = new Holder(v); 
      return h; 
     } 

     @Override 
     public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
      ((Holder) holder).getProgress().setText(progress+""); 
      progress++; 
      Glide.with(ctx) 
        .load(Uri.parse("file:///android_asset/" + (position + 1) + ".png")) 
        .into(((Holder) holder).getImage1()); 
     } 

     @Override 
     public long getItemId(int position) { 
      return position; 
     } 

     @Override 
     public int getItemCount() { 
      return items.size(); 
     } 

     public class Holder extends RecyclerView.ViewHolder { 

      private final ImageView image1; 
      private final TextView progress; 

      public ImageView getImage1() { 
       return image1; 
      } 

      public TextView getProgress() { 
       return progress; 
      } 

      public Holder(View itemView) { 
       super(itemView); 
       image1 = (ImageView) itemView.findViewById(R.id.image1_view); 
       progress = (TextView) itemView.findViewById(R.id.progress_text); 
      } 
     } 
    } 

} 

主レイアウト： https://github.com/Anton111111/ExampleGlideBlink/blob/master/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/activity_main" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.example.testglide.MainActivity"> 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/recycler_view" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 
</RelativeLayout> 

アイテムのレイアウト： https://github.com/Anton111111/ExampleGlideBlink/blob/master/app/src/main/res/layout/item.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical"> 

    <ImageView 
     android:id="@+id/image1_view" 
     android:layout_width="100dp" 
     android:layout_height="100dp" /> 

    <TextView 
     android:id="@+id/progress_text" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" /> 
</LinearLayout> 

私はRecyclerViewアダプタにnotifyItemChangedを呼び出します私はテキスト（私の例では、ID R.id.progressのEditText）とイメージを変更せずに表示するだけです。しかし、それは点滅します。

私は点滅することなくテキストを変更できますか？

Answer 1

public class SquaredFrameLayout extends FrameLayout { 
public SquaredFrameLayout(Context context) { 
    super(context); 
} 

public SquaredFrameLayout(Context context, AttributeSet attrs) { 
    super(context, attrs); 
} 

public SquaredFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) { 
    super(context, attrs, defStyleAttr); 
} 

@TargetApi(Build.VERSION_CODES.LOLLIPOP) 
public SquaredFrameLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 
    super(context, attrs, defStyleAttr, defStyleRes); 
} 

@Override 
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
    super.onMeasure(widthMeasureSpec, widthMeasureSpec); 
}} 

そして、あなたのxmlで私は答えにこの問題を解決し

<com.app_views.SquaredFrameLayout 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageView 
     android:id="@+id/iv_answer_image" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:onClick="@{group.onHashTagPhotoClicked}" 
     android:paddingEnd="1dp" 
     android:paddingLeft="1dp" 
     android:paddingRight="1dp" 
     android:paddingStart="1dp" 
     android:paddingTop="1dp" 
     app:galleryImage="@{group.boothPhoto}" /> 
</com.app_views.SquaredFrameLayout>