Android自定义view设置xml属性
一个圆形的自定义TextView，通过xml来设置背景颜色的属性values/attrs
<declare-styleable name="MyCircleTextView"><attr name="circleTint" format="color"/></declare-styleable>
在使用view的xml中
<MyCircleTextViewandroid:id="@+id/layout_1_1_750"style="@style/functionItemCircleText"android:text="1:1"app:circleTint="@color/btn_login_purple_press" />
自定义的MyCircleTextView
public class MyCircleTextView extends AppCompatTextView {private Paint paint;float circleRadius = 100;float centerX;float centerY;private String text = "测试";int color;Rect rect = new Rect();public MyCircleTextView(Context context) {super(context);init();}public MyCircleTextView(Context context, @Nullable AttributeSet attrs) {super(context, attrs);TypedArray typedArray = context.obtainStyledAttributes(attrs,R.styleable.MyCircleTextView);String string = typedArray.getString(R.styleable.MyCircleTextView_circleTint);color = Color.parseColor(string);init();}public MyCircleTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);TypedArray typedArray = context.obtainStyledAttributes(attrs,R.styleable.MyCircleTextView);String string = typedArray.getString(R.styleable.MyCircleTextView_circleTint);color = Color.parseColor(string);init();}private void init() {paint = new Paint();paint.setColor(color);paint.setAntiAlias(true);}@Overrideprotected void onDraw(Canvas canvas) {centerX = getWidth() / 2;centerY = getHeight() / 2;circleRadius = centerX;//绘制一个圆形canvas.drawCircle(centerX, centerY, circleRadius, paint);super.onDraw(canvas);}}
