Android屏幕单击事件
自己折腾了半天，没有搞出来，所以，趁下班之际，提个问题，请大家帮忙解决，感激不尽。
想要的效果是：通过单击屏幕，将Gallery控件显示或隐藏，现在的问题是，由于有了ImageSwitcher触摸屏幕切换图片的功能，单击屏幕的事件不知道如何去获取，如果将imageSwitcher.setOnTouchListener(this)语句注释掉，单击屏幕的事件就可以了。
可运行的代码如下，图片不好上传哦，麻烦大家自己添加图片，帮忙调试一下，谢谢啦：
- Java code
import android.app.Activity;import android.content.Context;import android.content.res.TypedArray;import android.os.Bundle;import android.util.Log;import android.view.GestureDetector;import android.view.GestureDetector.SimpleOnGestureListener;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;import android.view.ViewGroup;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Gallery.LayoutParams;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.ViewSwitcher.ViewFactory;/** * ImageSwitcherActivity.java * @author cloay * 2011-7-16 */public class Album extends Activity implements OnItemSelectedListener, ViewFactory, OnTouchListener { private ImageSwitcher imageSwitcher; private Gallery gallery; private int selectedTag = 0; private int downX, upX; private GestureDetector gestureScanner; private Integer [] imagesId = new Integer[]{R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.f, R.drawable.g}; private Integer [] selectId = new Integer[]{R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.f, R.drawable.g}; private static final String TAG = "Album"; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); imageSwitcher = (ImageSwitcher)findViewById(R.id.switcher); imageSwitcher.setFactory(this); //设置图片切换时的动画效果 imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out)); imageSwitcher.setOnTouchListener(this); gallery = (Gallery)findViewById(R.id.gallery); //自定义ImageAdapter继承于BaseAdapter，是一个内部类 gallery.setAdapter(new ImageAdapter(this)); gallery.setOnItemSelectedListener(this); gestureScanner = new GestureDetector(new SimpleOnGestureListener() { @Override public boolean onSingleTapConfirmed(MotionEvent e) { Log.i(TAG, "click"); return false; } }); } @Override public View makeView() { ImageView image = new ImageView(this); image.setScaleType(ImageView.ScaleType.FIT_CENTER); image.setLayoutParams(new ImageSwitcher.LayoutParams( LayoutParams.FILL_PARENT, LayoutParams.MATCH_PARENT)); return image; } @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { selectedTag = arg2; imageSwitcher.setImageResource(imagesId[arg2]); } @Override public void onNothingSelected(AdapterView<?> arg0) { } public class ImageAdapter extends BaseAdapter{ private Context context; int galleryItemBackground; public ImageAdapter (Context c){ context = c; TypedArray typeArray = obtainStyledAttributes(R.styleable.Gallery); galleryItemBackground = typeArray.getResourceId(R.styleable.Gallery_android_galleryItemBackground, 0); typeArray.recycle(); } @Override public int getCount() { //返回selectId[]的长度 return selectId.length; } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ImageView imageView = new ImageView(context); //设置资源图片 imageView.setImageResource(selectId[position]); imageView.setAdjustViewBounds(true); //允许调整边框 //设定底部画廊，自适应大小 imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); //设置画廊背景 imageView.setBackgroundResource(galleryItemBackground); return imageView; } } @Override public boolean onTouch(View v, MotionEvent event) { if (event.getAction() == MotionEvent.ACTION_DOWN) { downX = (int)event.getX(); // 取得按下时的坐标x return true; } else if (event.getAction() == MotionEvent.ACTION_UP) { upX = (int)event.getX(); // 取得松开时的坐标x; if (upX - downX > 100) { // 从左拖到右，即看前一张 // 如果是第一，则去到尾部 if (gallery.getSelectedItemPosition() == 0) selectedTag = gallery.getCount() - 1; else selectedTag = gallery.getSelectedItemPosition() - 1; imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out)); } else if (downX - upX > 100) { // 从右拖到左，即看后一张 // 如果是最后，则去到第一 if (gallery.getSelectedItemPosition() == (gallery.getCount() - 1)) selectedTag = 0; else selectedTag = gallery.getSelectedItemPosition() + 1; imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out)); } // 改变gallery图片所选，自动触发ImageSwitcher的setOnItemSelectedListener gallery.setSelection(selectedTag, true); return true; } return false; } @Override public boolean onTouchEvent(MotionEvent event) { return gestureScanner.onTouchEvent(event); }}
res\layout\main.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <ImageSwitcher android:id="@+id/switcher" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_alignParentLeft="true" android:layout_alignParentTop="true"/> <Gallery android:id="@+id/gallery" android:layout_width="fill_parent" android:layout_alignParentLeft="true" android:layout_height="60dp" android:spacing="15dp" android:layout_alignParentBottom="true" android:gravity="center_vertical" android:visibility="invisible"/></RelativeLayout>
res\values\attrs.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><resources> <declare-styleable name="Gallery"> <attr name="android:galleryItemBackground" /> </declare-styleable></resources>
res\anim\push_left_in.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><!-- 左进渐变效果 --><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="1500" android:fromXDelta="100%p" android:toXDelta="0" /> <alpha android:duration="1500" android:fromAlpha="0.1" android:toAlpha="1.0" /></set>
res\anim\push_left_out.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><!-- 右出渐变效果 --><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="1500" android:fromXDelta="0" android:toXDelta="-100%p" /> <alpha android:duration="1500" android:fromAlpha="1.0" android:toAlpha="0.1" /></set>
res\anim\push_right_in.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><!-- 右进渐变效果 --><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="1500" android:fromXDelta="-100%p" android:toXDelta="0" /> <alpha android:duration="1500" android:fromAlpha="0.1" android:toAlpha="1.0" /></set>
res\anim\push_right_out.xml
- XML code
<?xml version="1.0" encoding="utf-8"?><!-- 右出渐变效果 --><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="1500" android:fromXDelta="0" android:toXDelta="100%p" /> <alpha android:duration="1500" android:fromAlpha="1.0" android:toAlpha="0.1" /></set>
[解决办法]