《Android实现Windows 8磁贴(Tile)样式按钮》
效果图如下：
我在网上流传的代码基础上精简、整理出一个简单的类，我暂时把它命名为：Windows8TileImageView，即Windows 8磁贴(Tile)样式按钮，Windows8TileImageView其实就是继承于标准Android ImageView，单击该Windows8TileImageView有收缩、侧边收缩等比较有趣的效果。现在把Windows8TileImageView这个类的全部代码贴出来：
package windows8.tile;
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ImageView;
public class Windows8TileImageView extends ImageView {
public static final int Rotate_Handler_Message_Start = 1;
public static final int Rotate_Handler_Message_Turning = 2;
public static final int Rotate_Handler_Message_Turned = 3;
public static final int Rotate_Handler_Message_Reverse = 6;
public static final int Scale_Handler_Message_Start = 1;
public static final int Scale_Handler_Message_Turning = 2;
public static final int Scale_Handler_Message_Turned = 3;
public static final int Scale_Handler_Message_Reverse = 6;
private boolean isAntiAlias = true;
private boolean scaleOnly = false;
private boolean isSizeChanged = false;
private boolean isShowAnimation = true;
private int rotateDegree = 10;
private boolean isFirst = true;
private float minScale = 0.95f;
private int vWidth;
private int vHeight;
private boolean isAnimationFinish = true, isActionMove = false,
isScale = false;
private Camera camera;
boolean XbigY = false;
float RolateX = 0;
float RolateY = 0;
OnViewClick onclick = null;
public Windows8TileImageView(Context context) {
super(context);
camera = new Camera();
}
public Windows8TileImageView(Context context, AttributeSet attrs) {
super(context, attrs);
camera = new Camera();
}
public void SetAnimationOnOff(boolean oo) {
isShowAnimation = oo;
}
public void setOnClickIntent(OnViewClick onclick) {
this.onclick = onclick;
}
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if (isFirst) {
isFirst = false;
init();
}
canvas.setDrawFilter(new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG
| Paint.FILTER_BITMAP_FLAG));
}
public void init() {
vWidth = getWidth() - getPaddingLeft() - getPaddingRight();
vHeight = getHeight() - getPaddingTop() - getPaddingBottom();
Drawable drawable = getDrawable();
BitmapDrawable bd = (BitmapDrawable) drawable;
bd.setAntiAlias(isAntiAlias);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
super.onTouchEvent(event);
if (!isShowAnimation)
return true;
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
float X = event.getX();
float Y = event.getY();
RolateX = vWidth / 2 - X;
RolateY = vHeight / 2 - Y;
XbigY = Math.abs(RolateX) > Math.abs(RolateY) ? true : false;
isScale = X > vWidth / 3 && X < vWidth * 2 / 3 && Y > vHeight / 3
&& Y < vHeight * 2 / 3;
isActionMove = false;
if (isScale) {
if (isAnimationFinish && !isSizeChanged) {
isSizeChanged = true;
scale_handler.sendEmptyMessage(Scale_Handler_Message_Start);
}
} else {
if (scaleOnly) {
scale_handler.sendEmptyMessage(Scale_Handler_Message_Start);
} else {
rotate_Handler
.sendEmptyMessage(Rotate_Handler_Message_Start);
}
}
break;
case MotionEvent.ACTION_MOVE:
float x = event.getX();
float y = event.getY();
if (x > vWidth || y > vHeight || x < 0 || y < 0) {
isActionMove = true;
} else {
isActionMove = false;
}
break;
case MotionEvent.ACTION_UP:
if (isScale) {
if (isSizeChanged)
scale_handler
.sendEmptyMessage(Scale_Handler_Message_Reverse);
} else {
rotate_Handler.sendEmptyMessage(Rotate_Handler_Message_Reverse);
}
break;
}
return true;
}
public interface OnViewClick {
public void onClick();
}
@SuppressLint("HandlerLeak")
private Handler rotate_Handler = new Handler() {
private Matrix matrix = new Matrix();
private float count = 0;
// private boolean clickGuolv = false;
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
matrix.set(getImageMatrix());
switch (msg.what) {
case Rotate_Handler_Message_Start:
count = 0;
beginRotate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
rotate_Handler.sendEmptyMessage(Rotate_Handler_Message_Turning);
break;
case Rotate_Handler_Message_Turning:
beginRotate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
count++;
if (count < getDegree()) {
rotate_Handler
.sendEmptyMessage(Rotate_Handler_Message_Turning);
} else {
isAnimationFinish = true;
}
break;
case Rotate_Handler_Message_Turned:
beginRotate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
if (count > 0) {
rotate_Handler
.sendEmptyMessage(Rotate_Handler_Message_Turned);
} else {
isAnimationFinish = true;
if (!isActionMove && onclick != null) {
onclick.onClick();
}
}
count--;
count--;
break;
case Rotate_Handler_Message_Reverse:
count = getDegree();
beginRotate(matrix, (XbigY ? count : 0), (XbigY ? 0 : count));
rotate_Handler.sendEmptyMessage(Rotate_Handler_Message_Turned);
break;
}
}
};
private synchronized void beginRotate(Matrix matrix, float rotateX,
float rotateY) {
// Bitmap bm = getImageBitmap();
int scaleX = (int) (vWidth * 0.5f);
int scaleY = (int) (vHeight * 0.5f);
camera.save();
camera.rotateX(RolateY > 0 ? rotateY : -rotateY);
camera.rotateY(RolateX < 0 ? rotateX : -rotateX);
camera.getMatrix(matrix);
camera.restore();
// 控制中心点
if (RolateX > 0 && rotateX != 0) {
matrix.preTranslate(-vWidth, -scaleY);
matrix.postTranslate(vWidth, scaleY);
} else if (RolateY > 0 && rotateY != 0) {
matrix.preTranslate(-scaleX, -vHeight);
matrix.postTranslate(scaleX, vHeight);
} else if (RolateX < 0 && rotateX != 0) {
matrix.preTranslate(-0, -scaleY);
matrix.postTranslate(0, scaleY);
} else if (RolateY < 0 && rotateY != 0) {
matrix.preTranslate(-scaleX, -0);
matrix.postTranslate(scaleX, 0);
}
setImageMatrix(matrix);
}
private Handler scale_handler = new Handler() {
private Matrix matrix = new Matrix();
private float s;
int count = 0;
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
matrix.set(getImageMatrix());
switch (msg.what) {
case Scale_Handler_Message_Start:
if (!isAnimationFinish) {
return;
} else {
isAnimationFinish = false;
isSizeChanged = true;
count = 0;
s = (float) Math.sqrt(Math.sqrt(minScale));
beginScale(matrix, s);
scale_handler
.sendEmptyMessage(Scale_Handler_Message_Turning);
}
break;
case Scale_Handler_Message_Turning:
beginScale(matrix, s);
if (count < 4) {
scale_handler
.sendEmptyMessage(Scale_Handler_Message_Turning);
} else {
isAnimationFinish = true;
if (!isSizeChanged && !isActionMove && onclick != null) {
onclick.onClick();
}
}
count++;
break;
case Scale_Handler_Message_Reverse:
if (!isAnimationFinish) {
scale_handler
.sendEmptyMessage(Scale_Handler_Message_Reverse);
} else {
isAnimationFinish = false;
count = 0;
s = (float) Math.sqrt(Math.sqrt(1.0f / minScale));
beginScale(matrix, s);
scale_handler
.sendEmptyMessage(Scale_Handler_Message_Turning);
isSizeChanged = false;
}
break;
}
}
};
private synchronized void beginScale(Matrix matrix, float scale) {
int scaleX = (int) (vWidth * 0.5f);
int scaleY = (int) (vHeight * 0.5f);
matrix.postScale(scale, scale, scaleX, scaleY);
setImageMatrix(matrix);
}
public int getDegree() {
return rotateDegree;
}
public void setDegree(int degree) {
rotateDegree = degree;
}
public float getScale() {
return minScale;
}
public void setScale(float scale) {
minScale = scale;
}
}Windows8TileImageView使用方法很简单，和Android的ImageView类似，直接把它作为一个View使用。比如可以在布局文件中这样使用：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<windows8.tile.Windows8TileImageView
android:id="@+id/c_joke"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:scaleType="matrix"
android:src="@drawable/left_top" />
<windows8.tile.Windows8TileImageView
android:id="@+id/c_idea"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:scaleType="matrix"
android:src="@drawable/left_bottom" />
</LinearLayout>
<windows8.tile.Windows8TileImageView
android:id="@+id/c_constellation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:scaleType="matrix"
android:src="@drawable/right" />
</LinearLayout>
<windows8.tile.Windows8TileImageView
android:id="@+id/c_recommend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:scaleType="matrix"
android:src="@drawable/bottom" />
</LinearLayout>
</LinearLayout>说明：此布局文件中的 android:src加载的drawable资源图片是自己选取的，具体使用时候可以根据自身情况设置。
可以为控件Windows8TileImageView增加单击事件，比如这样添加：
package windows8.tile;
import android.support.v7.app.ActionBarActivity;
import android.widget.Toast;
import android.os.Bundle;
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Windows8TileImageView joke = (Windows8TileImageView) findViewById(R.id.c_joke);
// 为某一个磁贴添加点击事件的方式。
joke.setOnClickIntent(new Windows8TileImageView.OnViewClick() {
@Override
public void onClick() {
Toast.makeText(getApplicationContext(), "磁贴的点击事件",
Toast.LENGTH_LONG).show();
}
});
}
}
