2011.08.18——— android 图片效果 ImageSwitcher+GestureDetector
2011.08.18——— android 图片效果 ImageSwitcher+GestureDetector
参考： http://www.williamhua.com/2009/04/android-touchscreen-gesture-recogniton/
实现一个滚动的图片效果，并且可以用手势来控制图片的滚动
side_in_left.xml
side_in_right.xml
其他的类似。。
参考： http://www.williamhua.com/2009/04/android-touchscreen-gesture-recogniton/
实现一个滚动的图片效果，并且可以用手势来控制图片的滚动
package com.lp;
import android.app.Activity;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.Animation.AnimationListener;
import android.widget.Button;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.ViewSwitcher;
import android.widget.Gallery.LayoutParams;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.View.OnTouchListener;
import android.view.MotionEvent;
import android.view.GestureDetector;
public class MainActivity extends Activity
implements ViewSwitcher.ViewFactory {
private Animation mInAnimationPrior;
private Animation mInAnimationNext;
private ImageSwitcher mSwitcher;
private ImageSwitcher mArrow;
private Button mbutton;
private int mPosition = 0;
private GestureDetector mGestureDetector;
private Handler _handle;
private Runnable _runable;
private static final float HORIZONTAL_SCROLL_DISTANCE = 10f;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.startpage);
mSwitcher = (ImageSwitcher) findViewById(R.id.switcher);
if(mSwitcher==null)
{
return;
}
mSwitcher.setFactory(this);
mArrow = (ImageSwitcher) findViewById(R.id.switcharrow);
mArrow.setFactory(this);
//mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
// android.R.anim.fade_in));
//mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
// android.R.anim.fade_out));
mbutton = (Button) findViewById(R.id.swtichbutton);
mbutton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mPosition < (mImageIds.length -1)) {
//当点击按钮时 就取消自动切换图片
_handle.removeCallbacks(_runable);
mSwitcher.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mSwitcher.setImageResource(mImageIds[++mPosition]);
mArrow.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mArrow.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mArrow.setImageResource(mArrowIds[mPosition]);
}
else if (mPosition == (mImageIds.length -1)) {
_handle.removeCallbacks(_runable);
// Intent intent = new Intent();
// intent.setClass(MainActivity.this, RegisterActivity.class);
// startActivity(intent);
// MainActivity.this.finish();
Toast.makeText(MainActivity.this, "注册", 0).show();
}
}
});
setupOnTouchListeners(findViewById(R.id.rootview));
mSwitcher.setImageResource(mImageIds[mPosition]);
mArrow.setImageResource(mArrowIds[mPosition]);
_handle = new Handler();
_runable = new Runnable() {
@Override
public void run() {
if (mPosition == (mImageIds.length -1)) {
// Intent intent = new Intent();
// intent.setClass(MainActivity.this, RegisterActivity.class);
// startActivity(intent);
// MainActivity.this.finish();
Toast.makeText(MainActivity.this, "注册", 0).show();
}
else
{
mSwitcher.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mSwitcher.setImageResource(mImageIds[++mPosition]);
mArrow.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mArrow.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mArrow.setImageResource(mArrowIds[mPosition]);
_handle.postDelayed(_runable, 3000);
}
}
};
}
public View makeView() {
ImageView i = new ImageView(this);
i.setBackgroundColor(0xFF000000);
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
return i;
}
private void setupOnTouchListeners(View rootView) {
mGestureDetector = new GestureDetector(this, new MyGestureListener());
OnTouchListener rootListener = new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
mGestureDetector.onTouchEvent(event);
// We do not use the return value of
// mGestureDetector.onTouchEvent because we will not receive
// the "up" event if we return false for the "down" event.
return true;
}
};
rootView.setOnTouchListener(rootListener);
}
private class MyGestureListener extends
GestureDetector.SimpleOnGestureListener {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
//
if ( Math.abs(velocityY) <= Math.abs(velocityX)
&& Math.abs(velocityX) > HORIZONTAL_SCROLL_DISTANCE) {
//
System.out.println(velocityX);
if (velocityX > 0) {
if (mPosition > 0) {
_handle.removeCallbacks(_runable);
//
mSwitcher.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_left));
mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_right));
mSwitcher.setImageResource(mImageIds[--mPosition]);
mArrow.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_left));
mArrow.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_right));
mArrow.setImageResource(mArrowIds[mPosition]);
}
} else {
if (mPosition < (mImageIds.length -1)) {
_handle.removeCallbacks(_runable);
mSwitcher.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mSwitcher.setImageResource(mImageIds[++mPosition]);
mArrow.setInAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_in_right));
mArrow.setOutAnimation(AnimationUtils.loadAnimation(MainActivity.this,
R.anim.slide_out_left));
mArrow.setImageResource(mArrowIds[mPosition]);
}
else if (mPosition == (mImageIds.length -1)) {
_handle.removeCallbacks(_runable);
// Intent intent = new Intent();
// intent.setClass(MainActivity.this, RegisterActivity.class);
// startActivity(intent);
// MainActivity.this.finish();
Toast.makeText(MainActivity.this, "注册", 0).show();
return true;
}
}
}
return true;
}
}
private Integer[] mImageIds = {
R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2};
private Integer[] mArrowIds = {
R.drawable.switch_arrow, R.drawable.switch_arrow_1, R.drawable.switch_arrow_2};
public void onResume()
{
super.onResume();
//_handle.postDelayed(_runable, 3000);
}
public void onPause()
{
super.onPause();
_handle.removeCallbacks(_runable);
}
//
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
_handle.removeCallbacks(_runable);
//dialog
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("是否退出注册过程?");
builder.setPositiveButton("是的",
new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id) {
}
});
builder.setNegativeButton("不是",
new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int id) {
_handle.postDelayed(_runable, 3000);
}
});
builder.show();
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}
}
side_in_left.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="-50%p" android:toXDelta="0"
android:duration="@android:integer/config_longAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_longAnimTime" />
</set>
side_in_right.xml
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate android:fromXDelta="50%p" android:toXDelta="0"
android:duration="@android:integer/config_longAnimTime"/>
<alpha android:fromAlpha="0.0" android:toAlpha="1.0"
android:duration="@android:integer/config_longAnimTime" />
</set>
其他的类似。。