如何使用android中的动画将苹果放入篮子中？答案

【问题标题】：how to drop apple inside the basket using animation in android?如何使用android中的动画将苹果放入篮子中？
【发布时间】：2018-05-24 09:23:59
【问题描述】：

我需要帮助，通过将苹果放在桶图像中，在 android 中用苹果填充篮子的动画。下面是我的拖放代码，我将苹果从一个地方拖放到另一个地方。

@Override
    public boolean onDrag(View v, DragEvent event) {
        // Store the action type for the incoming event
        final int action = event.getAction();
        // Handles each of the expected events
        switch (action) {
            case DragEvent.ACTION_DRAG_STARTED:
                // Invalidate the view to force a redraw in the new tint
                v.invalidate();

                // Returns true to indicate that the View can accept the
                // dragged data.
                return true;
            case DragEvent.ACTION_DRAG_ENTERED:
                v.invalidate();
                return true;
            case DragEvent.ACTION_DRAG_LOCATION:
                // Ignore the event
                return true;
            case DragEvent.ACTION_DRAG_EXITED:
                v.invalidate();
                return true;
            case DragEvent.ACTION_DROP:
                v.invalidate();
                if (v instanceof ImageView) {
                    ImageView dropView = (ImageView) v;
                    Drawable dropViewDrawable = dropView.getDrawable();
                    Log.v("dropViewDrawable", "" + dropViewDrawable);
                    for (int i = 0; i < numberOfObject; i++) {
                        if (containerImageViewList.get(i).getDrawable() == null) {
                            containerImageViewList.get(i).setImageResource(R.drawable.sp_glass_cut);
                            if (selectedImageColor.equals(getResources().getString(R.string.title_images_color_grey))) {
                                containerImageViewList.get(i).setImageBitmap(CommonMethods.convertColoredImageIntoBlackAndWhiteImage(containerImageViewList.get(i)));
                            }
                            break;
                        }
                    }
                    dragImageView.setImageBitmap(null);
                    successCount++;                        
                } else {

                    CommonMethods.showSweetAlertDialog(SPLevelOneMoveObjectTBActivity.this, false);
                }
                return true;
            case DragEvent.ACTION_DRAG_ENDED:
                v.invalidate();
                Log.v("ACTION_DRAG_ENDED", "ACTION_DRAG_ENDED");
                if (!isSuccess && !isFail) {
                    isFail = true;
                    CommonMethods.showSweetAlertDialog(SPLevelOneMoveObjectTBActivity.this, false);
                    return true;
                }
                return true;
            default:
                break;
        }
        return false;
    }

现在如何制作动画并显示篮子里的苹果？

【问题讨论】：

标签： java android android-studio

【解决方案1】：

嗨，您可以在 Empty LinearLayout（或任何其他布局，如 RelativeLayout 和 ConstraintLayout）的帮助下制作您的篮子，然后像这样为其分配边框
res/drawable/basket_border.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners
android:topLeftRadius="0dp"
android:topRightRadius="0dp"
android:bottomLeftRadius="45dp"
android:bottomRightRadius="45dp"
/>
<gradient
android:angle="45"
android:centerX="35%"
android:centerColor="#9BA8A3"
android:startColor="#6BA9E8"
android:endColor="#FFFFFF"
android:type="linear"
/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
<size
android:width="270dp"
android:height="120dp"
/>
<stroke
android:width="5dp"
android:color="#878787"
/>
</shape>

或者你也可以在背景中使用一个篮子的 9 个补丁图像

在这里，我使用了TextView 并使用以下文件将其变为圆形而不是苹果 res/drawable/border_circle.xml

<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="oval">
  <!--  <gradient
        android:angle="0"
        android:startColor="#f00"
        android:centerColor="@android:color/transparent"
        android:centerX="0.01" />-->
    <stroke android:width="5dp" android:color="#3AFB03" />
    <solid android:color="#FAFB03" />
    <corners android:radius="4dp" />
</shape>

您可以改用 9patch 苹果图片和ImageView。

现在转到您的main.xml

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >
<LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="260dp"
        android:layout_height="98dp"


        android:layout_marginEnd="8dp"

        android:layout_marginStart="8dp"

        android:layout_marginTop="8dp"
        android:background="@drawable/basket_border"
        android:orientation="vertical" >
    </LinearLayout>
   <LinearLayout
android:id="@+id/linearLayout2"
        android:layout_width="match_parent"
        android:layout_height="108dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:gravity="bottom"
        android:orientation="horizontal"
        android:weightSum="4">

        <TextView
            android:id="@+id/textView"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/border_circle"
            android:gravity="center"
            android:text="Text 1"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
            android:textColor="@android:color/holo_blue_bright"
            tools:layout_editor_absoluteX="16dp"
            tools:layout_editor_absoluteY="284dp"/>

        <TextView
            android:id="@+id/textView2"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/border_circle"
            android:gravity="center"
            android:text="Text 2"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
            android:textColor="@android:color/holo_red_dark"
            tools:layout_editor_absoluteX="90dp"
            tools:layout_editor_absoluteY="284dp"/>

        <TextView
            android:id="@+id/textView3"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/border_circle"
            android:gravity="center"
            android:text="Text 3"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
            android:textColor="@android:color/holo_purple"
            tools:layout_editor_absoluteX="162dp"
            tools:layout_editor_absoluteY="284dp"/>

        <TextView
            android:id="@+id/textView4"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_margin="5dp"
            android:layout_weight="1"
            android:background="@drawable/border_circle"
            android:gravity="center"
            android:text="Text 4"
            android:textAppearance="@style/Base.TextAppearance.AppCompat.Large"
            tools:layout_editor_absoluteX="230dp"
            tools:layout_editor_absoluteY="283dp"/>
    </LinearLayout>

</LinearLayout>

您可以使用拖放的概念将ImageView(apple) 放入id linearLayout1 的LinearLayout 中，这样您就可以在ImageView(apple) 上应用普通动画，而添加到LinearLayout（篮子）

【讨论】：