Android 图像切换器上的触摸事件
我有这段代码,它正在成功运行,但我想添加触摸事件对它的图像变化,也为放大和缩小效果。。。。 这是我的代码:Android 图像切换器上的触摸事件,android,touch,imageswitcher,Android,Touch,Imageswitcher,我有这段代码,它正在成功运行,但我想添加触摸事件对它的图像变化,也为放大和缩小效果。。。。 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.Lay
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;
}
}
package com.conn;
导入android.app.Activity;
导入android.content.Context;
导入android.os.Bundle;
导入android.view.view;
导入android.view.ViewGroup;
导入android.view.ViewGroup.LayoutParams;
导入android.view.animation.AnimationUtils;
导入android.widget.AdapterView;
导入android.widget.BaseAdapter;
导入android.widget.Gallery;
导入android.widget.ImageSwitcher;
导入android.widget.ImageView;
导入android.widget.AdapterView.OnItemClickListener;
导入android.widget.ViewSwitcher.ViewFactory;
公共类图像\u滑块扩展活动实现ViewFactory{
整数pics[]={R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,
R.drawable.e};
图像切换开关;
/**在首次创建活动时调用*/
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
iSwitcher=(ImageSwitcher)findViewById(R.id.ImageSwitcher01);
iSwitcher.setFactory(本);
iSwitcher.setInAnimation(AnimationUtils.loadAnimation)(此,
android.R.anim.fade_in);
iSwitcher.setOutAnimation(AnimationUtils.loadAnimation)(此,
android.R.anim.fade_out);
画廊画廊=(画廊)findViewById(R.id.Gallery01);
gallery.setAdapter(新的ImageAdapter(本));
gallery.setOnItemClickListener(新的OnItemClickListener(){
@凌驾
公共链接(AdapterView arg0、视图arg1、内部arg2、,
长arg3){
iSwitcher.setImageResource(pics[arg2]);
}
});
}
公共类ImageAdapter扩展了BaseAdapter{
私有上下文ctx;
公共图像适配器(上下文c){
ctx=c;
}
@凌驾
public int getCount(){
返回图片长度;
}
@凌驾
公共对象getItem(int arg0){
返回arg0;
}
@凌驾
公共长getItemId(int arg0){
返回arg0;
}
@凌驾
公共视图getView(int arg0、视图arg1、视图组arg2){
ImageView iView=新的ImageView(ctx);
iView.setImageResource(pics[arg0]);
iView.setScaleType(ImageView.ScaleType.FIT_XY);
iView.setLayoutParams(新图库.LayoutParams(150150));
返回iView;
}
}
@凌驾
公共视图makeView(){
ImageView iView=新的ImageView(本);
iView.setScaleType(ImageView.ScaleType.FIT_CENTER);
iView.setLayoutParams(新
ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);
iView.setBackgroundColor(0xFF000000);
返回iView;
}
}
浏览下面的链接,它具有您所需的所有功能
钳形变焦
http://blog.sephiroth.it/2011/04/04/imageview-zoom-and-scroll/
单指变焦
希望这有帮助
我已经根据你的需要修改了课程。。使用这个PinchImageView而不是ImageView..太简单了
看看这里。。。http://pastebin.com/eRH2D2nF
谢谢。。
Giri谢谢你的帮助,但它并没有真正起作用。你能在我的代码中通过编辑来实现这些功能吗……?检查我的最新ans。它有根据你的链接修改代码的链接可能很简单,但对于像我这样的新用户来说,这有点困难……因为我甚至一次都没有使用过touch事件……你能编辑我的代码吗编码并更正…?作为初学者,我很容易理解。。。。。