图像切换器上的触摸事件

Question

我有这段代码，它运行成功，但我想在其上添加触摸事件以更改图像以及放大和缩小效果...... 这是我的代码：

package com.conn;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ViewSwitcher.ViewFactory;

public class image_slider extends Activity implements ViewFactory {

    Integer pics[] = { R.drawable.a, R.drawable.b, R.drawable.c, R.drawable.d,
            R.drawable.e };

    ImageSwitcher iSwitcher;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        iSwitcher = (ImageSwitcher) findViewById(R.id.ImageSwitcher01);
        iSwitcher.setFactory(this);
        iSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
                android.R.anim.fade_in));
        iSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
                android.R.anim.fade_out));

        Gallery gallery = (Gallery) findViewById(R.id.Gallery01);
        gallery.setAdapter(new ImageAdapter(this));
        gallery.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                iSwitcher.setImageResource(pics[arg2]);
            }
        });
    }

    public class ImageAdapter extends BaseAdapter {

        private Context ctx;

        public ImageAdapter(Context c) {
            ctx = c; 
        }

        @Override
        public int getCount() {

            return pics.length;
        }

        @Override
        public Object getItem(int arg0) {

            return arg0;
        }

        @Override
        public long getItemId(int arg0) {

            return arg0;
        }

        @Override
        public View getView(int arg0, View arg1, ViewGroup arg2) {

            ImageView iView = new ImageView(ctx);
            iView.setImageResource(pics[arg0]);
            iView.setScaleType(ImageView.ScaleType.FIT_XY);
            iView.setLayoutParams(new Gallery.LayoutParams(150, 150));
            return iView;
        }

    }

    @Override
    public View makeView() {
        ImageView iView = new ImageView(this);
        iView.setScaleType(ImageView.ScaleType.FIT_CENTER);
        iView.setLayoutParams(new 
                ImageSwitcher.LayoutParams(
                        LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
        iView.setBackgroundColor(0xFF000000);
        return iView;
    }
}

Answer 1

浏览下面的链接，它具有您需要的所有功能。

PinchZooming

http://code.google.com/p/android-pinch/wiki/捏图像视图
http://blog.sephiroth.it/2011/04/04/imageview-zoom-and-scroll/

一指缩放

http://blogs.sonyericsson.com/wp/2010/05/18/android-one-finger-zoom-tutorial-part-1/

希望这会有所帮助。

我已经根据您的需要修改了该类..使用这个 PinchImageView 而不是 ImageView..如此简单

在这里查看...http://pastebin.com/eRH2D2nF

谢谢..
吉里