android 仿汽车仪表盘

最新推荐文章于 2025-09-26 16:44:43 发布

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最新推荐文章于 2025-09-26 16:44:43 发布 · 4.5k 阅读

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这篇博客介绍如何在Android中通过Paint和Canvas来手动绘制汽车仪表盘，并结合动画效果。虽然变量较多，但整体实现并不复杂。博主分享了布局文件、自定义View的代码，并提到目前存在一些小问题，计划后续进行修复。

这个就是使用Paint和Canvas一个个画上去的,再加上动画,总体来说不难,就是变量多,所以看起来的时候要慢慢看,现在在这贴下代码

布局文件：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <SeekBar
        android:id="@+id/seekbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="10px"
        android:paddingRight="10px"
        android:layout_marginTop="20px"
        />
    <LinearLayout
        android:layout_width="300px"
        android:layout_height="300px"
        android:layout_marginTop="90px"
        android:layout_marginLeft="60px"
        >
    <com.example.speeddemo.CarRecorderView
        android:id="@+id/carview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="#8B5F65"
         />
    </LinearLayout>
</RelativeLayout>

自定义veiw

package com.example.speeddemo;
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.DashPathEffect;
import android.graphics.LinearGradient;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Shader;
import android.util.AttributeSet;
import android.view.View;
/**
 * Created by admin on 2016/8/28.
 */
public class CarRecorderView extends View {
    private static final String TAG = "CarRecorderView" ;
    private LinearGradient linearGradient = null;
    private Paint blackCirclePaint;
    private int blackCirClePaintWidth = 8;

    private Paint arcAnimPaint;
    private Paint outerAnimPaint;
    private Paint whiteCirclePaint ;
    private Paint unitTextPaint;
    private int whiteCirclePaintWidth = 24;
    private Paint outerPaint;
    private Paint linePaint;
    private Paint textValuePaint;
    private Paint interprogressPaint;

    private int lineWidth = 5;
    private Paint outerSmallPaint;
    private RectF outerRectF;
    private RectF outerAnimRectF ;
    private Bitmap carBitmap;

    private int width

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