调整上onDoubleTapEvent的ImageView [英] Resize imageview on onDoubleTapEvent

问题描述

我要调整的的ImageView 在 doubleTapEvent 。一个code例子将是真正有用的。

I want to resize an ImageView on doubleTapEvent. A code example will be really helpful.

推荐答案

XML：

<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/myImage"
android:src="@drawable/myPicture"
android:layout_width="64sp"
android:layout_height="64sp"
/>

Java的：

public class MyActivity extends Activity implements OnDoubleTapListener{
    private ImageView img;

    private static int NEW_WIDTH = 100;
    private static int NEW_HEIGHT = 100;

    @Override
    public void onCreate(Bundle savedInstanceState){
        setContentView(R.layout.myLayout);
        this.img = findViewById(R.id.myImage);
        img.setOnDoubleTapListener(this);
    }

    public boolean onDoubleTap(MotionEvent e){
        this.img.setLayoutParams(new LayoutParams(NEW_WIDTH, NEW_HEIGHT));
    }

这样的事情...

Something like this...

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