android_66_girl_dress_up

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效果:

清单:

布局:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.sg31.girldressup.MainActivity" >    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/aneiyi"         />    <ImageView        android:id="@+id/iv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/awaiyi"         />    </RelativeLayout>

代码:

package com.sg31.girldressup;import android.support.v7.app.ActionBarActivity;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Matrix;import android.graphics.Paint;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;import android.widget.ImageView;public class MainActivity extends ActionBarActivity {private Bitmap bmCopy;private ImageView iv;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);dressup();}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action bar item clicks here. The action bar will// automatically handle clicks on the Home/Up button, so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}public void dressup() {Bitmap bmSrc = BitmapFactory.decodeResource(getResources(),R.drawable.awaiyi);bmCopy = Bitmap.createBitmap(bmSrc.getWidth(), bmSrc.getHeight(),bmSrc.getConfig());Paint paint = new Paint();Canvas canvas = new Canvas(bmCopy);canvas.drawBitmap(bmSrc, new Matrix(), paint);iv = (ImageView) findViewById(R.id.iv);iv.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_MOVE:int x = (int) event.getX();int y = (int) event.getY();for (int i = -5; i <= 5; i++) {for (int j = -5; j <= 5; j++) {// 把用户划过的坐标置为透明色// 改变指定的像素颜色if (Math.sqrt(i * i + j * j) <= 5) {if (x + i < bmCopy.getWidth()&& y + j < bmCopy.getHeight()&& x + i >= 0 && y + j >= 0) {bmCopy.setPixel(x + i, y + j,Color.TRANSPARENT);iv.setImageBitmap(bmCopy);}}}}break;}return true;}});}}

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