android弧形

1. android 弧形文字怎么实现

因为你描述的不够清楚，我只能按照自己的理解写了下。比较粗糙，而且因为用到了差值动画，所以适用于3.0以上的android系统，你给自己的TextView或EditText添加个文字改变监听，例如： 你的文本控件.addTextChangedListener(new TextWatcher(){});然后重写onTextChangedfang方法，在里面调用下面的方法就行了。里面的效果我暂时写死了，你可以根据需要自己修改参数。 private void changeTextAlpha(final TextView target){ final int color = target.getCurrentTextColor(); target.setTextColor(0 * 0x1000000 + color); //设置起始与结束值（透明度），从0到255渐变 ValueAnimator valueAnimator = ValueAnimator.ofInt(0, 255); valueAnimator.setEvaluator(new IntEvaluator()); //设置插值器，线性（匀速）渐变 valueAnimator.setInterpolator(new LinearInterpolator()); valueAnimator.addUpdateListener(new AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animator) { int alpha = (Integer)animator.getAnimatedValue(); target.setTextColor(alpha * 0x1000000 + color); } }); //持续时间3秒 valueAnimator.setDuration(3000).start(); }

2. 安卓主题图标怎么设置成弧形的

很简单的，只需要在原主题包icon中增加一个遮罩就可以实现了。

遮罩的用处就是让其他未单独做图标的程序，显示出和主题风格相近或者类似的效果。

注意观察的话，下面一张图的四周是一个边框的，实际就是主题的遮罩， 任何一个第三方的程序都会应用此遮罩效果。

因为不知道你做的什么主题，这里也不详细说了。 建议你解包别人的主题文件查看一下就明白了。

3. 求教 android半圆弧形的进度条问题

package com.example.roundprogressbar;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.RectF;import android.graphics.Typeface;import android.util.AttributeSet;import android.util.Log;import android.view.View;import com.example.circlepregress.R;/** * 仿iphone带进度的进度条，线程安全的View，可直接在线程中更新进度 * @author xiaanming * */public class RoundProgressBar extends View {/*** 画笔对象的引用*/private Paint paint;/*** 圆环的颜色*/private int roundColor;/*** 圆环进度的颜色*/private int roundProgressColor;/*** 中间进度百分比的字符串的颜色*/private int textColor;/*** 中间进度百分比的字符串的字体*/private float textSize;/*** 圆环的宽度*/private float roundWidth;/*** 最大进度*/private int max;/*** 当前进度*/private int progress;/*** 是否显示中间的进度*/private boolean textIsDisplayable;/*** 进度的风格，实心或者空心*/private int style;public static final int STROKE = 0;public static final int FILL = 1;public RoundProgressBar(Context context) {this(context, null);}public RoundProgressBar(Context context, AttributeSet attrs) {this(context, attrs, 0);}public RoundProgressBar(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);paint = new Paint();TypedArray mTypedArray = context.obtainStyledAttributes(attrs,R.styleable.RoundProgressBar);//获取自定义属性和默认值roundColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundColor, Color.RED);roundProgressColor = mTypedArray.getColor(R.styleable.RoundProgressBar_roundProgressColor, Color.GREEN);textColor = mTypedArray.getColor(R.styleable.RoundProgressBar_textColor, Color.GREEN);textSize = mTypedArray.getDimension(R.styleable.RoundProgressBar_textSize, 15);roundWidth = mTypedArray.getDimension(R.styleable.RoundProgressBar_roundWidth, 5);max = mTypedArray.getInteger(R.styleable.RoundProgressBar_max, 100);textIsDisplayable = mTypedArray.getBoolean(R.styleable.RoundProgressBar_textIsDisplayable, true);style = mTypedArray.getInt(R.styleable.RoundProgressBar_style, 0);mTypedArray.recycle();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);/*** 画最外层的大圆环*/int centre = getWidth()/2; //获取圆心的x坐标int radius = (int) (centre - roundWidth/2); //圆环的半径paint.setColor(roundColor); //设置圆环的颜色paint.setStyle(Paint.Style.STROKE); //设置空心paint.setStrokeWidth(roundWidth); //设置圆环的宽度paint.setAntiAlias(true); //消除锯齿 canvas.drawCircle(centre, centre, radius, paint); //画出圆环Log.e("log", centre + "");/*** 画进度百分比*/paint.setStrokeWidth(0); paint.setColor(textColor);paint.setTextSize(textSize);paint.setTypeface(Typeface.DEFAULT_BOLD); //设置字体int percent = (int)(((float)progress / (float)max) * 100); //中间的进度百分比，先转换成float在进行除法运算，不然都为0float textWidth = paint.measureText(percent + "%"); //测量字体宽度，我们需要根据字体的宽度设置在圆环中间if(textIsDisplayable && percent != 0 && style == STROKE){canvas.drawText(percent + "%", centre - textWidth / 2, centre + textSize/2, paint); //画出进度百分比}/*** 画圆弧 ，画圆环的进度*///设置进度是实心还是空心paint.setStrokeWidth(roundWidth); //设置圆环的宽度paint.setColor(roundProgressColor); //设置进度的颜色RectF oval = new RectF(centre - radius, centre - radius, centre+ radius, centre + radius); //用于定义的圆弧的形状和大小的界限switch (style) {case STROKE:{paint.setStyle(Paint.Style.STROKE);canvas.drawArc(oval, 0, 360 * progress / max, false, paint); //根据进度画圆弧break;}case FILL:{paint.setStyle(Paint.Style.FILL_AND_STROKE);if(progress !=0)canvas.drawArc(oval, 0, 360 * progress / max, true, paint); //根据进度画圆弧break;}}}public synchronized int getMax() {return max;}/*** 设置进度的最大值* @param max*/public synchronized void setMax(int max) {if(max max){progress = max;}if(progress <= max){this.progress = progress;postInvalidate();}}public int getCricleColor() {return roundColor;}public void setCricleColor(int cricleColor) {this.roundColor = cricleColor;}public int getCricleProgressColor() {return roundProgressColor;}public void setCricleProgressColor(int cricleProgressColor) {this.roundProgressColor = cricleProgressColor;}public int getTextColor() {return textColor;}public void setTextColor(int textColor) {this.textColor = textColor;}public float getTextSize() {return textSize;}public void setTextSize(float textSize) {this.textSize = textSize;}public float getRoundWidth() {return roundWidth;}public void setRoundWidth(float roundWidth) {this.roundWidth = roundWidth;}}package com.example.roundprogressbar;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import com.example.circlepregress.R;public class MainActivity extends Activity {private RoundProgressBar mRoundProgressBar1, mRoundProgressBar2 ,mRoundProgressBar3, mRoundProgressBar4, mRoundProgressBar5;private int progress = 0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_cricle_progress);mRoundProgressBar1 = (RoundProgressBar) findViewById(R.id.roundProgressBar1);mRoundProgressBar2 = (RoundProgressBar) findViewById(R.id.roundProgressBar2);mRoundProgressBar3 = (RoundProgressBar) findViewById(R.id.roundProgressBar3);mRoundProgressBar4 = (RoundProgressBar) findViewById(R.id.roundProgressBar4);mRoundProgressBar5 = (RoundProgressBar) findViewById(R.id.roundProgressBar5);((Button)findViewById(R.id.button1)).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {new Thread(new Runnable() {@Overridepublic void run() {while(progress <= 100){progress += 3;System.out.println(progress);mRoundProgressBar1.setProgress(progress);mRoundProgressBar2.setProgress(progress);mRoundProgressBar3.setProgress(progress);mRoundProgressBar4.setProgress(progress);mRoundProgressBar5.setProgress(progress);try {Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}}}}).start();}});}}activity_cricle_progress.xml刚好做过，通过复写oncanvas实现的求教 android半圆弧形的进度条问题