介绍 public class RoundCircleDrawable extends 可拉的{
private 才能;Paint mPaint;//画笔
private 才能;int mWidth;//图片宽与长度的最小值
private 才能;int mRadius;//半径
private 才能;int mRound;//圆角
private 才能;RectF mRectF;//矩形
private 才能;Bitmap mBitmap;//图片
private 才能Type mType =, Type.TYPE_ROUND;//默认是矩形//才能设置类型
enum 类型{才能
,,,,,,TYPE_ROUND TYPE_CICLE;
,,}
public 才能;RoundCircleDrawable (Bitmap 位图){
,,,this.mBitmap =,位图;
,,,//初始化画笔
,,,mPaint =, new 油漆();
,,,mPaint.setAntiAlias(真正的);
,,,BitmapShader shader =, new BitmapShader (mBitmap, TileMode.CLAMP,, TileMode.CLAMP);
,,,mPaint.setShader(材质);
,,,mWidth =, Math.min (mBitmap.getWidth (),, mBitmap.getHeight ());
,,,mRadius =, mWidth /, 2;
,,}
,/* *
,,*,向外提供设置图片类型的方法
,,*,@param 类型
,,*/public 才能;void setType (Type 类型){
,,,this.mType =,类型;
,,}
,/* *
,,*,暴露给外面设置圆角的大小
,,*,
,,*,@param 圆的
,,*/public 才能;void setRound (int 圆),{
,,,this.mRound =,圆形;
,,}
@Override才能
public 才能;void setBounds (int 左,int ,, int ,, int 底部),{
,,,super.setBounds(,,,,,,底部);
,,,mRectF =, new RectF(左,,,,,,底部);
,,}
@Override才能
public 才能;void 画(Canvas 画布),{
,,,if (mType ==, Type.TYPE_ROUND), {
,,,,,canvas.drawRoundRect (mRound, mRectF,还以为,mRound, mPaint);
,,,}else {
,,,,,canvas.drawCircle(时间/mWidth 2, mWidth /, 2, mRadius,, mPaint);
,,,}
,,}
@Override才能
public 才能;int getIntrinsicWidth (), {
,,,if (mType ==, Type.TYPE_CICLE), {
,,,,,return mWidth;
,,,}else {
,,,,,return mBitmap.getWidth ();
,,,}
,,}
@Override才能
public 才能;int getIntrinsicHeight (), {
,,,if (mType ==, Type.TYPE_CICLE), {
,,,,,return mWidth;
,,,}else {
,,,,,return mBitmap.getHeight ();
,,,}
,,}
@Override才能
public 才能;void setAlpha (int α),{
,,,mPaint.setAlpha(α);
,,}
@Override才能
public 才能;void setColorFilter (ColorFilter cf), {
,,,mPaint.setColorFilter (cf);
,,}
@Override才能
public 才能;int getOpacity (), {
,,,return PixelFormat.TRANSLUCENT;
,,}
} public class RoundActivity extends Activity {
private 才能;ImageView mImageView;
@Override才能
protected 才能;void onCreate (Bundle savedInstanceState), {
,,,super.onCreate (savedInstanceState);
,,,setContentView (R.layout.activity_round_drawable);
,,,mImageView =, (ImageView), findViewById (R.id.iv_round);
,,,Bitmap Bitmap =, BitmapFactory.decodeResource (getresource (),, R.drawable.aa);
,,,//RoundImageDrawable drawable =, new RoundImageDrawable(位图);
,,,//drawable.setRound (30);
,,,RoundCircleDrawable drawable =, new RoundCircleDrawable(位图);
,,,drawable.setRound (50);
,,,mImageView.setImageDrawable(可拉的);
,,}
}
如何在Android中利用可拉的绘制一个圆角?相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
<强> 1。创建类RoundCircleDrawable继承可拉的
<强> 2。实现方法
看完上述内容,你们掌握如何在Android中利用可拉的绘制一个圆角的方法了吗?如果还想学到更多技能或想了解更多相关内容,欢迎关注行业资讯频道,感谢各位的阅读!
