安卓旅途之——开发数独（二）
安卓旅途之——开发数独（二）
二、绘制九宫格
/*** * Excerpted from "Hello, Android!", * published by The Pragmatic Bookshelf. * Copyrights apply to this code. It may not be used to create training material, * courses, books, articles, and the like. Contact us if you are in doubt. * We make no guarantees that this code is fit for any purpose. * Visit http://www.pragmaticprogrammer.com/titles/eband for more book information. ***/ package org.example.sudoku; import android.content.Context; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Rect; import android.graphics.Paint.FontMetrics; import android.graphics.Paint.Style; import android.os.Bundle; import android.os.Parcelable; import android.util.Log; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.animation.AnimationUtils; public class PuzzleView extends View { private static final String TAG = "数独 "; private static final String SELX = "selX"; private static final String SELY = "selY"; private static final String VIEW_STATE = "viewState"; private static final int ID = 42; private float width; private float height; private int selX; private int selY; private final Rect selRect = new Rect(); private final Game game; public PuzzleView(Context context) { super(context); this.game = (Game) context; setFocusable(true); setFocusableInTouchMode(true); // ... setId(ID); } @Override protected Parcelable onSaveInstanceState() { Parcelable p = super.onSaveInstanceState(); Log.d(TAG, "onSaveInstanceState"); Bundle bundle = new Bundle(); bundle.putInt(SELX, selX); bundle.putInt(SELY, selY); bundle.putParcelable(VIEW_STATE, p); return bundle; } @Override protected void onRestoreInstanceState(Parcelable state) { Log.d(TAG, "onRestoreInstanceState"); Bundle bundle = (Bundle) state; select(bundle.getInt(SELX), bundle.getInt(SELY)); super.onRestoreInstanceState(bundle.getParcelable(VIEW_STATE)); return; } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { width = w / 9f; height = h / 9f; getRect(selX, selY, selRect); Log.d(TAG, "onSizeChanged: width " + width + ", height " + height); super.onSizeChanged(w, h, oldw, oldh); } @Override protected void onDraw(Canvas canvas) { //改写onDraw函数绘制背景 Paint background = new Paint(); background.setColor(getResources().getColor( R.color.puzzle_background)); canvas.drawRect(0, 0, getWidth(), getHeight(), background); //画线 Paint dark = new Paint(); dark.setColor(getResources().getColor(R.color.puzzle_dark)); Paint hilite = new Paint(); hilite.setColor(getResources().getColor(R.color.puzzle_hilite)); Paint light = new Paint(); light.setColor(getResources().getColor(R.color.puzzle_light)); for (int i = 0; i < 9; i++) { canvas.drawLine(0, i * height, getWidth(), i * height, light); canvas.drawLine(0, i * height + 1, getWidth(), i * height + 1, hilite); canvas.drawLine(i * width, 0, i * width, getHeight(), light); canvas.drawLine(i * width + 1, 0, i * width + 1, getHeight(), hilite); } for (int i = 0; i < 9; i++) { if (i % 3 != 0) continue; canvas.drawLine(0, i * height, getWidth(), i * height, dark); canvas.drawLine(0, i * height + 1, getWidth(), i * height + 1, hilite); canvas.drawLine(i * width, 0, i * width, getHeight(), dark); canvas.drawLine(i * width + 1, 0, i * width + 1, getHeight(), hilite); } //绘制数字 Paint foreground = new Paint(Paint.ANTI_ALIAS_FLAG); foreground.setColor(getResources().getColor( R.color.puzzle_foreground)); foreground.setStyle(Style.FILL); foreground.setTextSize(height * 0.75f); foreground.setTextScaleX(width / height); foreground.setTextAlign(Paint.Align.CENTER); FontMetrics fm = foreground.getFontMetrics(); float x = width / 2; float y = height / 2 - (fm.ascent + fm.descent) / 2; for (int i = 0; i < 9; i++) { for (int j = 0; j < 9; j++) { canvas.drawText(this.game.getTileString(i, j), i * width + x, j * height + y, foreground); } } if (Prefs.getHints(getContext())) { Paint hint = new Paint(); int c[] = { getResources().getColor(R.color.puzzle_hint_0), getResources().getColor(R.color.puzzle_hint_1), getResources().getColor(R.color.puzzle_hint_2), }; Rect r = new Rect(); for (int i = 0; i < 9; i++) { for (int j = 0; j < 9; j++) { int movesleft = 9 - game.getUsedTiles(i, j).length; if (movesleft < c.length) { getRect(i, j, r); hint.setColor(c[movesleft]); canvas.drawRect(r, hint); } } } } Log.d(TAG, "selRect=" + selRect); Paint selected = new Paint(); selected.setColor(getResources().getColor( R.color.puzzle_selected)); canvas.drawRect(selRect, selected); } @Override public boolean onTouchEvent(MotionEvent event) { if (event.getAction() != MotionEvent.ACTION_DOWN) return super.onTouchEvent(event); select((int) (event.getX() / width), (int) (event.getY() / height)); game.showKeypadOrError(selX, selY); Log.d(TAG, "onTouchEvent: x " + selX + ", y " + selY); return true; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { Log.d(TAG, "onKeyDown: keycode=" + keyCode + ", event=" + event); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_UP: select(selX, selY - 1); break; case KeyEvent.KEYCODE_DPAD_DOWN: select(selX, selY + 1); break; case KeyEvent.KEYCODE_DPAD_LEFT: select(selX - 1, selY); break; case KeyEvent.KEYCODE_DPAD_RIGHT: select(selX + 1, selY); break; case KeyEvent.KEYCODE_0: case KeyEvent.KEYCODE_SPACE: setSelectedTile(0); break; case KeyEvent.KEYCODE_1: setSelectedTile(1); break; case KeyEvent.KEYCODE_2: setSelectedTile(2); break; case KeyEvent.KEYCODE_3: setSelectedTile(3); break; case KeyEvent.KEYCODE_4: setSelectedTile(4); break; case KeyEvent.KEYCODE_5: setSelectedTile(5); break; case KeyEvent.KEYCODE_6: setSelectedTile(6); break; case KeyEvent.KEYCODE_7: setSelectedTile(7); break; case KeyEvent.KEYCODE_8: setSelectedTile(8); break; case KeyEvent.KEYCODE_9: setSelectedTile(9); break; case KeyEvent.KEYCODE_ENTER: case KeyEvent.KEYCODE_DPAD_CENTER: game.showKeypadOrError(selX, selY); break; default: return super.onKeyDown(keyCode, event); } return true; } public void setSelectedTile(int tile) { if (game.setTileIfValid(selX, selY, tile)) { invalidate(); } else { Log.d(TAG, "setSelectedTile: invalid: " + tile); startAnimation(AnimationUtils.loadAnimation(game, R.anim.shake)); } } private void select(int x, int y) { invalidate(selRect); selX = Math.min(Math.max(x, 0), 8); selY = Math.min(Math.max(y, 0), 8); getRect(selX, selY, selRect); invalidate(selRect); } private void getRect(int x, int y, Rect rect) { rect.set((int) (x * width), (int) (y * height), (int) (x * width + width), (int) (y * height + height)); } }
三、添加音乐
添加音乐其实很简单的，写一个音乐类，然后把音乐资源传递进去，那就ok了。不过我做的时候，太大的音乐是不可以了，只能是几百MB的
/*** * Excerpted from "Hello, Android!", * published by The Pragmatic Bookshelf. * Copyrights apply to this code. It may not be used to create training material, * courses, books, articles, and the like. Contact us if you are in doubt. * We make no guarantees that this code is fit for any purpose. * Visit http://www.pragmaticprogrammer.com/titles/eband for more book information. ***/ package org.example.sudoku; import android.content.Context; import android.media.MediaPlayer; public class Music { private static MediaPlayer mp = null; //播放音乐 public static void play(Context context, int resource) { stop(context); //一直播放音乐 if (Prefs.getMusic(context)) { mp = MediaPlayer.create(context, resource); mp.setLooping(true); mp.start(); } } //停止音乐 public static void stop(Context context) { if (mp != null) { mp.stop(); mp.release(); mp = null; } } }
@Override
protected void onResume() {
super.onResume();
Music.play(this, R.raw.kaitou);//调用play方法播放音乐
}
@Override
protected void onPause() {
super.onPause();
Music.stop(this);//停止播放当前的音乐
}
是不是超简单的呢？是的！！！！！！！！！！！！！
