代碼貼出來,友善自己回顧和大家借鑒
下載下傳Demo位址:自定義 Progress(水波紋動畫)
實作方法:
xml檔案`
<com.example.jiaojiao.waveprogressdemo.DynamicWave
android:id="@+id/dw_progress"
android:background="#ffffff"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_margin="5dp"
android:layout_centerInParent="true" />`
自定義View
/**
* 簡介:波浪進度條
*/
public class DynamicWave extends View {
// 圓
private Paint paint;
// private int roundWidth = 10;
// private int roundHeight = 10;
private int roundWidth = ;
private int roundHeight = ;
private Paint paint2;
// 波紋顔色
private static int WAVE_PAINT_COLOR;// = 0x880000aa;
// y = Asin(wx+b)+h
private float STRETCH_FACTOR_A=;
private static final int OFFSET_Y = ;
// 第一條水波移動速度
private static final int TRANSLATE_X_SPEED_ONE = ;
// 第二條水波移動速度
private static final int TRANSLATE_X_SPEED_TWO = ;
private float mCycleFactorW;
private int mTotalWidth, mTotalHeight;
private float[] mYPositions;
private float[] mResetOneYPositions;
private float[] mResetTwoYPositions;
private int mXOffsetSpeedOne;
private int mXOffsetSpeedTwo;
private int mXOneOffset;
private int mXTwoOffset;
private Paint mWavePaint;
private Paint mWavePaint2;
private Paint mWavePaint3;
private DrawFilter mDrawFilter;
private float currentY=;
private float lastY=;
private Bitmap bitmaps;
public DynamicWave(Context context, AttributeSet attrs) {
super(context, attrs);
// 圓
if (attrs != null) {
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.RoundAngleImageView);
assert a != null;
roundWidth = a.getDimensionPixelSize(R.styleable.RoundAngleImageView_roundWidth, roundWidth);
roundHeight = a.getDimensionPixelSize(R.styleable.RoundAngleImageView_roundHeight, roundHeight);
} else {
float density = context.getResources().getDisplayMetrics().density;
roundWidth = (int) (roundWidth * density);
roundHeight = (int) (roundHeight * density);
}
paint = new Paint();
paint.setColor(Color.WHITE);
paint.setAntiAlias(true);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OUT));
paint2 = new Paint();
paint2.setXfermode(null);
STRETCH_FACTOR_A=f*getResources().getDisplayMetrics().density;
// 将dp轉化為px，用于控制不同分辨率上移動速度基本一緻
mXOffsetSpeedOne = (int) (TRANSLATE_X_SPEED_ONE*getResources().getDisplayMetrics().density);//UIUtils.dipToPx(context, TRANSLATE_X_SPEED_ONE);
mXOffsetSpeedTwo = (int) (TRANSLATE_X_SPEED_TWO*getResources().getDisplayMetrics().density);//UIUtils.dipToPx(context, TRANSLATE_X_SPEED_TWO);
WAVE_PAINT_COLOR=context.getResources().getColor(R.color.orange);
// 初始繪制波紋的畫筆
mWavePaint = new Paint();
// 去除畫筆鋸齒
mWavePaint.setAntiAlias(true);
// 設定風格為實線
mWavePaint.setStyle(Paint.Style.FILL);
// 設定畫筆顔色
mWavePaint.setColor(WAVE_PAINT_COLOR);
mDrawFilter = new PaintFlagsDrawFilter(, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
// 第二條波紋
mWavePaint2=new Paint();
// 去除畫筆鋸齒
mWavePaint2.setAntiAlias(true);
// 設定風格為實線
mWavePaint2.setStyle(Paint.Style.FILL);
// 設定畫筆顔色
mWavePaint2.setColor(context.getResources().getColor(R.color.dynamic_wave_orange));
}
@SuppressWarnings("NullableProblems")
@Override
public void draw(Canvas canvas) {
Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas2 = new Canvas(bitmap);
super.draw(canvas2);
canvas.drawBitmap(toRoundCorner(bitmap, ), , , paint2);
}
// 目前進度
public void setProgress(float current){
if (-==current){
currentY=-;
}else {
currentY=current-STRETCH_FACTOR_A;
}
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 從canvas層面去除繪制時鋸齒
canvas.setDrawFilter(mDrawFilter);
if (<=currentY){
float js=currentY/*getHeight();
if(<=js){
lastY=js;
}else {
lastY=;
}
}else {
lastY=;
currentY=-;
}
resetPositonY();
for (int i = ; i < mTotalWidth; i++) {
// 減400隻是為了控制波紋繪制的y的在螢幕的位置，大家可以改成一個變量，然後動态改變這個變量，進而形成波紋上升下降效果
// 繪制第一條水波紋
canvas.drawLine(i, mTotalHeight - mResetOneYPositions[i] - lastY, i,
mTotalHeight,
mWavePaint2);
// 繪制第二條水波紋
canvas.drawLine(i, mTotalHeight - mResetTwoYPositions[i] - lastY, i,
mTotalHeight,
mWavePaint);
}
// 改變兩條波紋的移動點
mXOneOffset += mXOffsetSpeedOne;
mXTwoOffset += mXOffsetSpeedTwo;
// 如果已經移動到結尾處，則重頭記錄
if (mXOneOffset >= mTotalWidth) {
mXOneOffset = ;
}
if (mXTwoOffset > mTotalWidth) {
mXTwoOffset = ;
}
// 引發view重繪，一般可以考慮延遲20-30ms重繪，空出時間片
//postInvalidate();
if (-!=currentY){
postInvalidateDelayed();
}
}
private void resetPositonY() {
// mXOneOffset代表目前第一條水波紋要移動的距離
int yOneInterval = mYPositions.length - mXOneOffset;
// 使用System.arraycopy方式重新填充第一條波紋的資料
System.arraycopy(mYPositions, mXOneOffset, mResetOneYPositions, , yOneInterval);
System.arraycopy(mYPositions, , mResetOneYPositions, yOneInterval, mXOneOffset);
int yTwoInterval = mYPositions.length - mXTwoOffset;
System.arraycopy(mYPositions, mXTwoOffset, mResetTwoYPositions, ,
yTwoInterval);
System.arraycopy(mYPositions, , mResetTwoYPositions, yTwoInterval, mXTwoOffset);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// 記錄下view的寬高
mTotalWidth = w;
mTotalHeight = h;
// 用于儲存原始波紋的y值
mYPositions = new float[mTotalWidth];
// 用于儲存波紋一的y值
mResetOneYPositions = new float[mTotalWidth];
// 用于儲存波紋二的y值
mResetTwoYPositions = new float[mTotalWidth];
// 将周期定為view總寬度
mCycleFactorW = (float) ( * Math.PI / mTotalWidth);
// 根據view總寬度得出所有對應的y值
for (int i = ; i < mTotalWidth; i++) {
mYPositions[i] = (float) (STRETCH_FACTOR_A * Math.sin(mCycleFactorW * i) + OFFSET_Y);
}
}
// 圓
public static Bitmap toRoundCorner(Bitmap bitmap, float ratio) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
bitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final Paint paint = new Paint();
final Rect rect = new Rect(, , bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
paint.setAntiAlias(true);
canvas.drawARGB(, , , );
canvas.drawRoundRect(rectF, bitmap.getWidth() / ratio,
bitmap.getHeight() / ratio, paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
private void drawLiftUp(Canvas canvas) {
Path path = new Path();
path.moveTo(, roundHeight);
path.lineTo(, );
path.lineTo(roundWidth, );
path.arcTo(new RectF(
,
,
roundWidth * ,
roundHeight * ),
-,
-);
path.close();
canvas.drawPath(path, paint);
}
private void drawLiftDown(Canvas canvas) {
Path path = new Path();
path.moveTo(, getHeight() - roundHeight);
path.lineTo(, getHeight());
path.lineTo(roundWidth, getHeight());
path.arcTo(new RectF(
,
getHeight() - roundHeight * ,
roundWidth * ,
getHeight()),
,
);
path.close();
canvas.drawPath(path, paint);
}
private void drawRightDown(Canvas canvas) {
Path path = new Path();
path.moveTo(getWidth() - roundWidth, getHeight());
path.lineTo(getWidth(), getHeight());
path.lineTo(getWidth(), getHeight() - roundHeight);
path.arcTo(new RectF(
getWidth() - roundWidth * ,
getHeight() - roundHeight * ,
getWidth(),
getHeight()), , );
path.close();
canvas.drawPath(path, paint);
}
private void drawRightUp(Canvas canvas) {
Path path = new Path();
path.moveTo(getWidth(), roundHeight);
path.lineTo(getWidth(), );
path.lineTo(getWidth() - roundWidth, );
path.arcTo(new RectF(
getWidth() - roundWidth * ,
,
getWidth(),
roundHeight * ),
-,
);
path.close();
canvas.drawPath(path, paint);
}
}
Activity
private DynamicWave dw_progress;
private TextView tv_at_present;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
dw_progress = (DynamicWave) findViewById(R.id.dw_progress);
tv_at_present = (TextView) findViewById(R.id.tv_at_present);
tv_at_present.setText("30%");
dw_progress.setProgress();
}
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