android - 如何同时缩放两个 ImageView？

Question

我想同时点击和缩放两个 ImageView。换句话说，我想缩放左 View 并在另一个 ImageView 中看到完全相同的效果而没有任何延迟。

是否有图书馆已经这样做了？我环顾四周都没有成功:(

谢谢

Answer 1

实际上 library 非常简单你正在使用:

布局activity_main:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:paddingTop="30dp"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/photo1"
        android:layout_width="0dp"
        android:layout_height="100dp"
        android:layout_weight="1" />

    <ImageView
        android:id="@+id/photo2"
        android:layout_width="0dp"
        android:layout_height="100dp"
        android:layout_weight="1" />

</LinearLayout>

Activity 中的代码

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

    ImageView pic1 = (ImageView) findViewById(R.id.photo1);
    ImageView pic2 = (ImageView) findViewById(R.id.photo2);

    Drawable bitmap = getResources().getDrawable(R.mipmap.ic_launcher);
    pic1.setImageDrawable(bitmap);
    pic2.setImageDrawable(bitmap);

    PhotoViewAttacher photoViewAttacher1 = new PhotoViewAttacher(pic1);
    final PhotoViewAttacher photoViewAttacher2 = new PhotoViewAttacher(pic2);
    photoViewAttacher1.setOnScaleChangeListener(new PhotoViewAttacher.OnScaleChangeListener() {
        @Override
        public void onScaleChange(float v, float v1, float v2) {
            photoViewAttacher2.onScale(v, v1, v2);
        }
    });
}

结果: