主要设计理念。下拉图片----使用ScrollView 。让 计算滑动y方向偏移值 让图片向上-50个DP 自己定义,当向下移动时展示所以图片,不是下拉时不处理,松手返回,再进行高斯模糊图片。
原理比较简单下拉源码图片如下:
public class PullScrollView extends ScrollView implements
ViewTreeObserver.OnGlobalLayoutListener {
View view;
int srcTopMargion;
float lastY;
float offsetY;
public PullScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
ViewTreeObserver observer = getViewTreeObserver();
if (null != observer)
observer.addOnGlobalLayoutListener(this);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
view = findViewById(R.id.pull_img);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
int action = ev.getAction();
float y = ev.getY();
Log.d("onTouchEvent", "action=" + action + ",y=" + y);
MarginLayoutParams params = (MarginLayoutParams) view.getLayoutParams();
switch (action) {
case MotionEvent.ACTION_DOWN:
lastY = y;
break;
case MotionEvent.ACTION_MOVE:
//计算滑动y方向偏移值
offsetY = y - lastY;
//向下移动
if (offsetY > 0) {
//滑动到看到所有图片展示,交给原来的逻辑处理
if (params.topMargin == 0) {
return super.onTouchEvent(ev);
}
//在不是下拉图片的时候,向下移动,交给原来的逻辑处理
if (getScrollY() != 0) {
return super.onTouchEvent(ev);
}
//可以下拉图片的情况
params.topMargin += offsetY / 10;
Log.d("onTouchEvent", "topMargin" + params.topMargin + ",lastY=" + lastY + ",y=" + y + ",offsetY" + offsetY);
if (params.topMargin >= 0) {
params.topMargin = 0;
}
view.setLayoutParams(params);
invalidate();
}
lastY = y;
break;
case MotionEvent.ACTION_UP:
//不和原始margion偏移一样的时候
if (params.topMargin != -srcTopMargion) {
Log.d("ACTION_UP", "moveY=" + (srcTopMargion + params.topMargin));
//滚动原始偏移值和现在偏移值之间的差值 eg:3~10
ObjectAnimator animator = ObjectAnimator.ofInt(this, "moveY", params.topMargin, -srcTopMargion);
animator.setDuration(200);
animator.setInterpolator(new AccelerateDecelerateInterpolator());
animator.start();
}
break;
}
return super.onTouchEvent(ev);
}
/**
* 设置移动中的Y值
*
* @param value
*/
public void setMoveY(int value) {
MarginLayoutParams params = (MarginLayoutParams) view.getLayoutParams();
params.topMargin = value;
Log.d("computeScroll", "topMargin=" + params.topMargin);
view.setLayoutParams(params);
invalidate();
}
@Override
public void onGlobalLayout() {
MarginLayoutParams params = (MarginLayoutParams) view.getLayoutParams();
srcTopMargion = -params.topMargin;
Log.d("srcTopMargion", "" + srcTopMargion);
getViewTreeObserver()
.removeGlobalOnLayoutListener(this);
}}
高斯模糊代码:
public class BitmapBlurUtil {
private static ExecutorService executor;
private static int POOL_SIZE = 2;// 单个CPU线程池大小
private static ExecutorService getExecutor() {
if (executor == null) {
int cpuNums = Runtime.getRuntime().availableProcessors();
executor = Executors.newFixedThreadPool(cpuNums * POOL_SIZE);
}
return executor;
}
public static void addTask(Bitmap bitmap, Handler handler) {
getExecutor().submit(new BitmapVagueTask(bitmap, handler));
}
/**
* 水平方向模糊度
*/
private static float hRadius = 3;
/**
* 竖直方向模糊度
*/
private static float vRadius = 3;
/**
* 模糊迭代度
*/
private static int iterations = 5;
/**
* 异步
*
* @author baiyuliang
*/
private static class BitmapVagueTask implements Runnable {
private Bitmap bitmap;
private Handler handler;
public BitmapVagueTask(Bitmap bitmap, Handler handler) {
super();
this.bitmap = bitmap;
this.handler = handler;
}
@Override
public void run() {
boxBlurFilter(bitmap, handler);
}
}
/**
* 高斯模糊
*
* @param bmp
* @return
*/
private static void boxBlurFilter(Bitmap bmp, Handler handler) {
int width = bmp.getWidth();
int height = bmp.getHeight();
int[] inPixels = new int[width * height];
int[] outPixels = new int[width * height];
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bmp.getPixels(inPixels, 0, width, 0, 0, width, height);
for (int i = 0; i < iterations; i++) {
blur(inPixels, outPixels, width, height, hRadius);
blur(outPixels, inPixels, height, width, vRadius);
}
blurFractional(inPixels, outPixels, width, height, hRadius);
blurFractional(outPixels, inPixels, height, width, vRadius);
bitmap.setPixels(inPixels, 0, width, 0, 0, width, height);
if (handler != null) {
@SuppressWarnings("deprecation")
Drawable drawable = new BitmapDrawable(bitmap);
Message message = new Message();
message.obj = drawable;
handler.sendMessage(message);
}
}
private static void blur(int[] in, int[] out, int width, int height, float radius) {
int widthMinus1 = width - 1;
int r = (int) radius;
int tableSize = 2 * r + 1;
int divide[] = new int[256 * tableSize];
for (int i = 0; i < 256 * tableSize; i++)
divide[i] = i / tableSize;
int inIndex = 0;
for (int y = 0; y < height; y++) {
int outIndex = y;
int ta = 0, tr = 0, tg = 0, tb = 0;
for (int i = -r; i <= r; i++) {
int rgb = in[inIndex + clamp(i, 0, width - 1)];
ta += (rgb >> 24) & 0xff;
tr += (rgb >> 16) & 0xff;
tg += (rgb >> 8) & 0xff;
tb += rgb & 0xff;
}
for (int x = 0; x < width; x++) {
out[outIndex] = (divide[ta] << 24) | (divide[tr] << 16)
| (divide[tg] << 8) | divide[tb];
int i1 = x + r + 1;
if (i1 > widthMinus1)
i1 = widthMinus1;
int i2 = x - r;
if (i2 < 0)
i2 = 0;
int rgb1 = in[inIndex + i1];
int rgb2 = in[inIndex + i2];
ta += ((rgb1 >> 24) & 0xff) - ((rgb2 >> 24) & 0xff);
tr += ((rgb1 & 0xff0000) - (rgb2 & 0xff0000)) >> 16;
tg += ((rgb1 & 0xff00) - (rgb2 & 0xff00)) >> 8;
tb += (rgb1 & 0xff) - (rgb2 & 0xff);
outIndex += height;
}
inIndex += width;
}
}
private static void blurFractional(int[] in, int[] out, int width,
int height, float radius) {
radius -= (int) radius;
float f = 1.0f / (1 + 2 * radius);
int inIndex = 0;
for (int y = 0; y < height; y++) {
int outIndex = y;
out[outIndex] = in[0];
outIndex += height;
for (int x = 1; x < width - 1; x++) {
int i = inIndex + x;
int rgb1 = in[i - 1];
int rgb2 = in[i];
int rgb3 = in[i + 1];
int a1 = (rgb1 >> 24) & 0xff;
int r1 = (rgb1 >> 16) & 0xff;
int g1 = (rgb1 >> 8) & 0xff;
int b1 = rgb1 & 0xff;
int a2 = (rgb2 >> 24) & 0xff;
int r2 = (rgb2 >> 16) & 0xff;
int g2 = (rgb2 >> 8) & 0xff;
int b2 = rgb2 & 0xff;
int a3 = (rgb3 >> 24) & 0xff;
int r3 = (rgb3 >> 16) & 0xff;
int g3 = (rgb3 >> 8) & 0xff;
int b3 = rgb3 & 0xff;
a1 = a2 + (int) ((a1 + a3) * radius);
r1 = r2 + (int) ((r1 + r3) * radius);
g1 = g2 + (int) ((g1 + g3) * radius);
b1 = b2 + (int) ((b1 + b3) * radius);
a1 *= f;
r1 *= f;
g1 *= f;
b1 *= f;
out[outIndex] = (a1 << 24) | (r1 << 16) | (g1 << 8) | b1;
outIndex += height;
}
out[outIndex] = in[width - 1];
inIndex += width;
}
}
public static int clamp(int x, int a, int b) {
return (x < a) ? a : (x > b) ? b : x;
}
}
高斯使用方法如下:
layout.xml
<com.seekbaromdocated.PullScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/hengxian"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white">
<ImageView
android:id="@+id/pull_img"
android:layout_width="match_parent"
android:layout_height="220dp"
android:layout_marginTop="-50dp"
android:scaleType="fitXY"
android:src="@mipmap/connect_ap_manually" />
<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/profile_image"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true"
android:layout_marginTop="98dp"
android:src="@mipmap/connect_ap_manually"
app:civ_border_color="@color/white"
app:civ_border_width="2dp" />
<ImageButton
android:id="@+id/btn_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="16.7dp"
android:layout_marginStart="16.7dp"
android:layout_marginTop="25dp"
android:background="#00000000"
/>
</RelativeLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignBottom="@+id/profile_image"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_gravity="center"
android:layout_marginTop="13.3dp"
android:textColor="#ff333333"
android:text="昵称:哈哈哈" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#ff333333"
android:text="123456789" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:layout_marginTop="15dp"
android:textColor="#ff333333"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
</LinearLayout>
<LinearLayout
android:id="@+id/id_tab_shape"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
<ImageButton
android:id="@+id/id_tab_shape_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#00000000"
android:clickable="false"
android:scaleType="fitXY"
/>
<TextView
android:id="@+id/id_tab_shape_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dip"
android:text="开发..."
/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
</LinearLayout>
<LinearLayout
android:id="@+id/id_tab_log"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
<ImageButton
android:id="@+id/id_tab_log_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#00000000"
android:clickable="false"
android:scaleType="fitXY"
/>
<TextView
android:id="@+id/id_tab_log_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dip"
android:text="学习..."
/>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="6.7dp"
android:background="@color/white"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/tRUpdates"
android:layout_width="fill_parent"
android:layout_height="52dp"
android:clickable="true"
android:focusable="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:drawablePadding="10.0dip"
android:gravity="center_vertical"
android:includeFontPadding="false"
android:paddingLeft="16.7dip"
android:text="检查更新"
android:textColor="#ff333333"
android:textSize="13sp" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="1px"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginLeft="13dp"
android:layout_marginRight="13dp"
android:background="@color/hengxian"></RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="@+id/tRFeedback"
android:layout_width="fill_parent"
android:layout_height="52dp"
android:clickable="true"
android:focusable="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:drawablePadding="10.0dip"
android:gravity="center_vertical"
android:includeFontPadding="false"
android:paddingLeft="16.7dip"
android:text="意见反馈"
android:textColor="#ff333333"
android:textSize="13sp" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="1px"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginLeft="13dp"
android:layout_marginRight="33dp"
android:background="@color/hengxian"></RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="@+id/tROperation"
android:layout_width="fill_parent"
android:layout_height="52dp"
android:clickable="true"
android:focusable="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:drawablePadding="10.0dip"
android:gravity="center_vertical"
android:includeFontPadding="false"
android:paddingLeft="16.7dip"
android:text="操作说明"
android:textColor="#ff333333"
android:textSize="13sp" />
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="6.7dp"
android:background="@color/white"
android:orientation="vertical">
<RelativeLayout
android:id="@+id/tRChange"
android:layout_width="fill_parent"
android:layout_height="52dp"
android:clickable="true"
android:focusable="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:drawablePadding="10.0dip"
android:gravity="center_vertical"
android:includeFontPadding="false"
android:paddingLeft="16.7dip"
android:text="修改密码"
android:textColor="#ff333333"
android:textSize="13sp" />
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="1px"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginLeft="13dp"
android:layout_marginRight="13dp"
android:background="@color/hengxian"></RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:id="@+id/tROutlogin"
android:layout_width="fill_parent"
android:layout_height="52dp"
android:clickable="true"
android:focusable="true">
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:drawablePadding="10.0dip"
android:gravity="center_vertical"
android:includeFontPadding="false"
android:paddingLeft="16.7dip"
android:text="退出登录"
android:textColor="#ff333333"
android:textSize="13sp" />
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</com.seekbaromdocated.PullScrollView>
Activity如下:
public class PersonalActivity extends Activity implements View.OnClickListener {
ImageView pull_img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_personal);
pull_img = (ImageView) findViewById(R.id.pull_img);
Resources res = getResources();
Bitmap bmp = BitmapFactory.decodeResource(res, R.mipmap.connect_ap_manually);
BitmapBlurUtil.addTask(bmp, new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
Drawable drawable = (Drawable) msg.obj;
pull_img.setImageDrawable(drawable);
}
});
}
@Override
public void onClick(View view) {
}
}
使用起来还是比较简单的。
圆形图像的可以参考我的这篇文章//www.greatytc.com/p/86e9a22a9c68
或者是使用 感谢。https://github.com/hdodenhof/CircleImageView
下载链接:http://pan.baidu.com/s/1kUAGjJp 密码:jwb9