Android圆形头像图实现
发布时间:2020-12-14 23:26:49 所属栏目:Java 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_widt
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 <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" > <zhangphil.circle.CircleImageView android:id="@+id/civ" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/pic" /> </RelativeLayout> 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.Paint.Align; import android.graphics.Rect; import android.graphics.RectF; import android.graphics.Shader; import android.graphics.SweepGradient; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.ColorDrawable; import android.graphics.drawable.Drawable; import android.net.Uri; import android.text.TextPaint; import android.util.AttributeSet; import android.util.FloatMath; import android.widget.ImageView; /** * @author Phil * */ 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 = 2; // 圆形边框的厚度默认值。 // 如果是0,则没有天蓝色渐变的边框。 private static final int DEFAULT_BORDER_WIDTH = 20; 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; private final Paint mFlagBackgroundPaint = new Paint(); private final TextPaint mFlagTextPaint = new TextPaint(); private String mFlagText; private boolean mShowFlag = false; private Rect mFlagTextBounds = new Rect(); Shader mSweepGradient = null; public CircleImageView(Context context) { super(context); init(); } public CircleImageView(Context context,AttributeSet attrs) { this(context,attrs,0); } public CircleImageView(Context context,AttributeSet attrs,int defStyle) { super(context,defStyle); // 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(); init(); } private void init() { super.setScaleType(SCALE_TYPE); 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 public void setAdjustViewBounds(boolean adjustViewBounds) { if (adjustViewBounds) { throw new IllegalArgumentException( "adjustViewBounds not supported."); } } @Override protected void onDraw(Canvas canvas) { if (getDrawable() == null) { return; } canvas.drawCircle(getWidth() / 2,getHeight() / 2,mDrawableRadius,mBitmapPaint); if (mBorderWidth != 0) { canvas.save(); canvas.rotate(20,getWidth() / 2,getHeight() / 2); canvas.drawCircle(getWidth() / 2,mBorderRadius,mBorderPaint); canvas.restore(); } if (mShowFlag && mFlagText != null) { canvas.drawArc(mBorderRect,40,100,false,mFlagBackgroundPaint); mFlagTextPaint.getTextBounds(mFlagText,mFlagText.length(),mFlagTextBounds); canvas.drawText(mFlagText,(3 + FloatMath.cos((float) (Math.PI * 5 / 18))) * getHeight() / 4 + mFlagTextBounds.height() / 3,mFlagTextPaint); } } @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; } /** * @param borderWidth * 圆形的边框厚度。 */ 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(); } @Override public void setImageURI(Uri uri) { super.setImageURI(uri); 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,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,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); mFlagBackgroundPaint.setColor(Color.BLACK & 0x66FFFFFF); mFlagBackgroundPaint.setFlags(TextPaint.ANTI_ALIAS_FLAG); mFlagTextPaint.setFlags(TextPaint.ANTI_ALIAS_FLAG); mFlagTextPaint.setTextAlign(Align.CENTER); mFlagTextPaint.setColor(Color.WHITE); mFlagTextPaint .setTextSize(getResources().getDisplayMetrics().density * 18); mSweepGradient = new SweepGradient(getWidth() / 2,new int[] { Color.rgb(255,255,255),Color.rgb(1,209,255) },null); mBorderPaint.setShader(mSweepGradient); 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); } public void setShowFlag(boolean show) { mShowFlag = show; invalidate(); } public void setFlagText(String text) { mFlagText = text; invalidate(); } } 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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