实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
package com.dk.animation;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.os.Build.VERSION;
import android.os.Handler;
import android.os.Message;
import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
public class BlurEffect extends BaseEffect {
private Bitmap mBitmap = null;
private Bitmap mScaledBitmap = null;
private ImageView mTopImage;
private int top;
public void prepareAnimation(final Activity destActivity) {
mTopImage = createImageView(destActivity, mBitmap);
}
public void prepare(Activity currActivity) {
View root = currActivity.getWindow().getDecorView().findViewById(android.R.id.content);
top = root.getTop();
root.setDrawingCacheEnabled(true);
mBitmap = root.getDrawingCache();
scaleBitmap(mBitmap);
}
private void scaleBitmap(Bitmap bmp) {
mScaledBitmap = Bitmap.createScaledBitmap(bmp, bmp.getWidth() / 8, bmp.getWidth() / 8, true);
}
public void cancel() {
}
public void clean(Activity activity) {
if (mTopImage != null) {
mTopImage.setLayerType(View.LAYER_TYPE_NONE, null);
try {
// If we use the regular removeView() we'll get a small UI glitch
activity.getWindowManager().removeViewImmediate(mTopImage);
} catch (Exception ignored) {
}
}
mBitmap = null;
}
private ImageView createImageView(Activity destActivity, Bitmap bmp) {
ImageView imageView = new ImageView(destActivity);
imageView.setImageBitmap(bmp);
imageView.setScaleType(ScaleType.FIT_XY);
WindowManager.LayoutParams windowParams = new WindowManager.LayoutParams();
windowParams.gravity = Gravity.TOP;
windowParams.x = 0;
windowParams.y = top;
windowParams.height = bmp.getHeight();
windowParams.width = bmp.getWidth();
windowParams.flags = WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
windowParams.format = PixelFormat.TRANSLUCENT;
windowParams.windowAnimations = 0;
destActivity.getWindowManager().addView(imageView, windowParams);
return imageView;
}
public void animate(final Activity destActivity, final int duration) {
new Handler().post(new Runnable() {
private int alpha = 255;
@Override
public void run() {
final Handler callBack = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 101:
mTopImage.setAlpha(alpha);
mTopImage.setImageBitmap(mScaledBitmap);
System.out.println("refresh:" alpha);
break;
case 102:
clean(destActivity);
break;
}
}
};
Thread animationThread = new Thread(new Runnable() {
@Override
public void run() {
while (alpha > 0) {
if (alpha > 180) {
alpha -= 8;
} else {
alpha -= 25;
}
if (alpha > 0) {
mScaledBitmap = apply(destActivity, mScaledBitmap, 3);
}
callBack.sendEmptyMessage(101);
try {
Thread.sleep(50);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
callBack.sendEmptyMessage(102);
}
});
animationThread.start();
}
});
}
// blur effect
private static int DEFAULT_BLUR_RADIUS = 7;
public static Bitmap apply(Context context, Bitmap sentBitmap) {
return apply(context, sentBitmap, DEFAULT_BLUR_RADIUS);
}
@SuppressLint("NewApi")
public static Bitmap apply(Context context, Bitmap sentBitmap, int radius) {
if (VERSION.SDK_INT > 16) {
Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
final RenderScript rs = RenderScript.create(context);
final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE,
Allocation.USAGE_SCRIPT);
final Allocation output = Allocation.createTyped(rs, input.getType());
final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
script.setRadius(radius);
script.setInput(input);
script.forEach(output);
output.copyTo(bitmap);
return bitmap;
}
// Stack Blur v1.0 from
// http://www.quasimondo.com/StackBlurForCanvas/StackBlurDemo.html
//
// Java Author: Mario Klingemann <mario at quasimondo.com>
// http://incubator.quasimondo.com
// created Feburary 29, 2004
// Android port : Yahel Bouaziz <yahel at kayenko.com>
// http://www.kayenko.com
// ported april 5th, 2012
// This is a compromise between Gaussian Blur and Box blur
// It creates much better looking blurs than Box Blur, but is
// 7x faster than my Gaussian Blur implementation.
//
// I called it Stack Blur because this describes best how this
// filter works internally: it creates a kind of moving stack
// of colors whilst scanning through the image. Thereby it
// just has to add one new block of color to the right side
// of the stack and remove the leftmost color. The remaining
// colors on the topmost layer of the stack are either added on
// or reduced by one, depending on if they are on the right or
// on the left side of the stack.
//
// If you are using this algorithm in your code please add
// the following line:
//
// Stack Blur Algorithm by Mario Klingemann <mario@quasimondo.com>
Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);
if (radius < 1) {
return (null);
}
int w = bitmap.getWidth();
int h = bitmap.getHeight();
int[] pix = new int[w * h];
bitmap.getPixels(pix, 0, w, 0, 0, w, h);
int wm = w - 1;
int hm = h - 1;
int wh = w * h;
int div = radius radius 1;
int r[] = new int[wh];
int g[] = new int[wh];
int b[] = new int[wh];
int rsum, gsum, bsum, x, y, i, p, yp, yi, yw;
int vmin[] = new int[Math.max(w, h)];
int divsum = (div 1) >> 1;
divsum *= divsum;
int dv[] = new int[256 * divsum];
for (i = 0; i < 256 * divsum; i ) {
dv[i] = (i / divsum);
}
yw = yi = 0;
int[][] stack = new int[div][3];
int stackpointer;
int stackstart;
int[] sir;
int rbs;
int r1 = radius 1;
int routsum, goutsum, boutsum;
int rinsum, ginsum, binsum;
for (y = 0; y < h; y ) {
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
for (i = -radius; i <= radius; i ) {
p = pix[yi Math.min(wm, Math.max(i, 0))];
sir = stack[i radius];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rbs = r1 - Math.abs(i);
rsum = sir[0] * rbs;
gsum = sir[1] * rbs;
bsum = sir[2] * rbs;
if (i > 0) {
rinsum = sir[0];
ginsum = sir[1];
binsum = sir[2];
} else {
routsum = sir[0];
goutsum = sir[1];
boutsum = sir[2];
}
}
stackpointer = radius;
for (x = 0; x < w; x ) {
r[yi] = dv[rsum];
g[yi] = dv[gsum];
b[yi] = dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (y == 0) {
vmin[x] = Math.min(x radius 1, wm);
}
p = pix[yw vmin[x]];
sir[0] = (p & 0xff0000) >> 16;
sir[1] = (p & 0x00ff00) >> 8;
sir[2] = (p & 0x0000ff);
rinsum = sir[0];
ginsum = sir[1];
binsum = sir[2];
rsum = rinsum;
gsum = ginsum;
bsum = binsum;
stackpointer = (stackpointer 1) % div;
sir = stack[(stackpointer) % div];
routsum = sir[0];
goutsum = sir[1];
boutsum = sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi ;
}
yw = w;
}
for (x = 0; x < w; x ) {
rinsum = ginsum = binsum = routsum = goutsum = boutsum = rsum = gsum = bsum = 0;
yp = -radius * w;
for (i = -radius; i <= radius; i ) {
yi = Math.max(0, yp) x;
sir = stack[i radius];
sir[0] = r[yi];
sir[1] = g[yi];
sir[2] = b[yi];
rbs = r1 - Math.abs(i);
rsum = r[yi] * rbs;
gsum = g[yi] * rbs;
bsum = b[yi] * rbs;
if (i > 0) {
rinsum = sir[0];
ginsum = sir[1];
binsum = sir[2];
} else {
routsum = sir[0];
goutsum = sir[1];
boutsum = sir[2];
}
if (i < hm) {
yp = w;
}
}
yi = x;
stackpointer = radius;
for (y = 0; y < h; y ) {
// Preserve alpha channel: ( 0xff000000 & pix[yi] )
pix[yi] = (0xff000000 & pix[yi]) | (dv[rsum] << 16) | (dv[gsum] << 8) | dv[bsum];
rsum -= routsum;
gsum -= goutsum;
bsum -= boutsum;
stackstart = stackpointer - radius div;
sir = stack[stackstart % div];
routsum -= sir[0];
goutsum -= sir[1];
boutsum -= sir[2];
if (x == 0) {
vmin[y] = Math.min(y r1, hm) * w;
}
p = x vmin[y];
sir[0] = r[p];
sir[1] = g[p];
sir[2] = b[p];
rinsum = sir[0];
ginsum = sir[1];
binsum = sir[2];
rsum = rinsum;
gsum = ginsum;
bsum = binsum;
stackpointer = (stackpointer 1) % div;
sir = stack[stackpointer];
routsum = sir[0];
goutsum = sir[1];
boutsum = sir[2];
rinsum -= sir[0];
ginsum -= sir[1];
binsum -= sir[2];
yi = w;
}
}
bitmap.setPixels(pix, 0, w, 0, 0, w, h);
return (bitmap);
}
}
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