import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.Toast;
import com.dk.view.drop.CoverManager;
import com.dk.view.drop.WaterDrop;
import com.dk.view.drop.DropCover.OnDragCompeteListener; public class MainActivity extends Activity { @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getActionBar().hide();
CoverManager.getInstance().init(this); ListView mList = (ListView) findViewById(R.id.list);
mList.setAdapter(new DemoAdapter()); CoverManager.getInstance().setMaxDragDistance(150);
CoverManager.getInstance().setExplosionTime(150);
} class DemoAdapter extends BaseAdapter {
@Override
public int getCount() {
return 99;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
convertView = LayoutInflater.from(MainActivity.this).inflate(
R.layout.view_list_item, null);
WaterDrop drop = (WaterDrop) convertView.findViewById(R.id.drop);
drop.setText(String.valueOf(position));
drop.setOnDragCompeteListener(new OnDragCompeteListener() {
@Override
public void onDrag() {
Toast.makeText(MainActivity.this, "remove:" + position,
Toast.LENGTH_SHORT).show();
}
});
return convertView;
}
}
}
<?xml version="1.0" encoding="utf-8"?> <!-- R.layout.view_list_item -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com.view.drop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="horizontal" > <com.view.drop.CircleImageView
android:layout_width="50dp"
android:layout_height="50dp"
android:src="@drawable/p3"
app:border_color="#92DDED"
app:border_width="3dp" /> <LinearLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:gravity="center_vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="Dean Ding"
android:textColor="#444444" />
<TextView
android:layout_width="40dp"
android:layout_height="30dp"
android:gravity="center_vertical"
android:text="11:11"
android:textColor="#666666" />
</LinearLayout> <LinearLayout
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:gravity="center_vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="30dp"
android:layout_weight="1"
android:gravity="center_vertical"
android:text="Hello World"
android:textColor="#666666" /> <com.dk.view.drop.WaterDrop
android:id="@+id/drop"
android:layout_width="25dp"
android:layout_height="25dp"
android:gravity="center_vertical" />
</LinearLayout>
</LinearLayout> </LinearLayout>
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView; /**
* Copyright 2014 Henning Dodenhof
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*
* 圆头像
*
*/
public class CircleImageView extends ImageView { private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP; private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
private static final int COLORDRAWABLE_DIMENSION = 1; private static final int DEFAULT_BORDER_WIDTH = 0;
private static final int DEFAULT_BORDER_COLOR = Color.BLACK; private final RectF mDrawableRect = new RectF();
private final RectF mBorderRect = new RectF(); private final Matrix mShaderMatrix = new Matrix();
private final Paint mBitmapPaint = new Paint();
private final Paint mBorderPaint = new Paint(); private int mBorderColor = DEFAULT_BORDER_COLOR;
private int mBorderWidth = DEFAULT_BORDER_WIDTH; private Bitmap mBitmap;
private BitmapShader mBitmapShader;
private int mBitmapWidth;
private int mBitmapHeight; private float mDrawableRadius;
private float mBorderRadius; private boolean mReady;
private boolean mSetupPending; public CircleImageView(Context context) {
super(context);
} public CircleImageView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
} public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
super.setScaleType(SCALE_TYPE); TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.CircleImageView, defStyle, 0); mBorderWidth = a.getDimensionPixelSize(
R.styleable.CircleImageView_border_width, DEFAULT_BORDER_WIDTH);
mBorderColor = a.getColor(R.styleable.CircleImageView_border_color,
DEFAULT_BORDER_COLOR); a.recycle(); mReady = true; if (mSetupPending) {
setup();
mSetupPending = false;
}
} @Override
public ScaleType getScaleType() {
return SCALE_TYPE;
} @Override
public void setScaleType(ScaleType scaleType) {
if (scaleType != SCALE_TYPE) {
throw new IllegalArgumentException(String.format(
"ScaleType %s not supported.", scaleType));
}
} @Override
protected void onDraw(Canvas canvas) {
if (getDrawable() == null) {
return;
} canvas.drawCircle(getWidth() / 2, getHeight() / 2, mDrawableRadius,
mBitmapPaint);
if (mBorderWidth != 0) {
canvas.drawCircle(getWidth() / 2, getHeight() / 2, mBorderRadius,
mBorderPaint);
}
} @Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
setup();
} public int getBorderColor() {
return mBorderColor;
} public void setBorderColor(int borderColor) {
if (borderColor == mBorderColor) {
return;
} mBorderColor = borderColor;
mBorderPaint.setColor(mBorderColor);
invalidate();
} public int getBorderWidth() {
return mBorderWidth;
} public void setBorderWidth(int borderWidth) {
if (borderWidth == mBorderWidth) {
return;
} mBorderWidth = borderWidth;
setup();
} @Override
public void setImageBitmap(Bitmap bm) {
super.setImageBitmap(bm);
mBitmap = bm;
setup();
} @Override
public void setImageDrawable(Drawable drawable) {
super.setImageDrawable(drawable);
mBitmap = getBitmapFromDrawable(drawable);
setup();
} @Override
public void setImageResource(int resId) {
super.setImageResource(resId);
mBitmap = getBitmapFromDrawable(getDrawable());
setup();
} private Bitmap getBitmapFromDrawable(Drawable drawable) {
if (drawable == null) {
return null;
} if (drawable instanceof BitmapDrawable) {
return ((BitmapDrawable) drawable).getBitmap();
} try {
Bitmap bitmap; if (drawable instanceof ColorDrawable) {
bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION,
COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
} else {
bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
drawable.getIntrinsicHeight(), BITMAP_CONFIG);
} Canvas canvas = new Canvas(bitmap);
drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
drawable.draw(canvas);
return bitmap;
} catch (OutOfMemoryError e) {
return null;
}
} private void setup() {
if (!mReady) {
mSetupPending = true;
return;
} if (mBitmap == null) {
return;
} mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP,
Shader.TileMode.CLAMP); mBitmapPaint.setAntiAlias(true);
mBitmapPaint.setShader(mBitmapShader); mBorderPaint.setStyle(Paint.Style.STROKE);
mBorderPaint.setAntiAlias(true);
mBorderPaint.setColor(mBorderColor);
mBorderPaint.setStrokeWidth(mBorderWidth); mBitmapHeight = mBitmap.getHeight();
mBitmapWidth = mBitmap.getWidth(); mBorderRect.set(0, 0, getWidth(), getHeight());
mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2,
(mBorderRect.width() - mBorderWidth) / 2); mDrawableRect.set(mBorderWidth, mBorderWidth, mBorderRect.width()
- mBorderWidth, mBorderRect.height() - mBorderWidth);
mDrawableRadius = Math.min(mDrawableRect.height() / 2,
mDrawableRect.width() / 2); updateShaderMatrix();
invalidate();
} private void updateShaderMatrix() {
float scale;
float dx = 0;
float dy = 0; mShaderMatrix.set(null); if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width()
* mBitmapHeight) {
scale = mDrawableRect.height() / (float) mBitmapHeight;
dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f;
} else {
scale = mDrawableRect.width() / (float) mBitmapWidth;
dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f;
} mShaderMatrix.setScale(scale, scale);
mShaderMatrix.postTranslate((int) (dx + 0.5f) + mBorderWidth,
(int) (dy + 0.5f) + mBorderWidth); mBitmapShader.setLocalMatrix(mShaderMatrix);
} }
import com.dk.view.drop.DropCover.OnDragCompeteListener;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.os.Build.VERSION;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.ScrollView;
import android.widget.TextView;
// 红色圆圈
public class WaterDrop extends RelativeLayout {
private Paint mPaint = new Paint();
private TextView mTextView;
private DropCover.OnDragCompeteListener mOnDragCompeteListener;
private boolean mHolderEventFlag; public WaterDrop(Context context) {
super(context);
init();
} public WaterDrop(Context context, AttributeSet attrs) {
super(context, attrs);
init();
} public void setText(String str) {
mTextView.setText(str);
} public void setTextSize(int size) {
mTextView.setTextSize(size);
} @SuppressLint("NewApi")
private void init() {
mPaint.setAntiAlias(true);
if (VERSION.SDK_INT > 11) {
setLayerType(View.LAYER_TYPE_SOFTWARE, null);
} mTextView = new TextView(getContext());
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.CENTER_IN_PARENT);
mTextView.setTextSize(13);
mTextView.setTextColor(0xffffffff);
mTextView.setLayoutParams(params);
addView(mTextView);
} @Override
protected void dispatchDraw(Canvas canvas) {
mPaint.setColor(0xffff0000);
canvas.drawCircle(getWidth() / 2, getHeight() / 2,
getWidth() / 2, mPaint);
super.dispatchDraw(canvas);
} @Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
} @Override
public boolean onTouchEvent(MotionEvent event) {
ViewGroup parent = getScrollableParent();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mHolderEventFlag = !CoverManager.getInstance().isRunning();
if (mHolderEventFlag) {
if (parent != null)
parent.requestDisallowInterceptTouchEvent(true);
CoverManager.getInstance().start(this, event.getRawX(), event.getRawY(), mOnDragCompeteListener);
}
break;
case MotionEvent.ACTION_MOVE:
if (mHolderEventFlag) {
CoverManager.getInstance().update(event.getRawX(), event.getRawY());
}
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
if (mHolderEventFlag) {
if (parent != null)
parent.requestDisallowInterceptTouchEvent(false);
CoverManager.getInstance().finish(this, event.getRawX(), event.getRawY());
}
break;
} return true;
} private ViewGroup getScrollableParent() {
View target = this;
while (true) {
View parent;
try {
/**
* ViewRootImpl cannot be cast to android.view.View
*/
parent = (View) target.getParent();
} catch (Exception e) {
return null;
}
if (parent == null)
return null;
if (parent instanceof ListView || parent instanceof ScrollView) {
return (ViewGroup) parent;
}
target = parent;
} } public void setOnDragCompeteListener(OnDragCompeteListener
onDragCompeteListener) {
mOnDragCompeteListener = onDragCompeteListener;
}
}
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
WaterDropLibrary http://download.csdn.net/detail/androidsj/7948845