最近碰到一个需求，需要实时显示指南针信号的干扰情况，这个干扰值一直在变化，如果超过某个值就显示红色，如果中等的话，就是黄色，低的话就是绿色，所以仿了一个程序，来实现这个功能，用的是自定义的progress
1.效果图
文章图片
2.主界面布局
3.主界面，线程和设置颜色和进度条的值
package com.example.administrator.testz;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;
import java.util.Random;
public class MainActivity extends AppCompatActivity {
// 参考网址 https://github.com/Airsaid/ZProgressBar 详细信息请看这里,我可以看的这个例子修改来的程序
private int num = 0;
private ZProgressBar mProgressBar;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mProgressBar = (ZProgressBar) findViewById(R.id.progressBar);
textView = (TextView) findViewById(R.id.textView);
mProgressBar.setMax(10);
//设置最大进度
mProgressBar.setDefBackgroundColor(R.color.black);
//设置背景颜色new Thread(new Runnable() {
@Override
public void run() {
while (true) {
try {
//线程的作用就是起一个变化的作用，看的更加直观，模拟数值的变化
Thread.sleep(1000);
runOnUiThread(new Runnable() {// 3788100123
@Override
public void run() {
//核心代码在这里
num = (int) (Math.random() * 10 + 1);
mProgressBar.setAnimProgress(num);
//设置进度
//设置进度颜色red-2870516 green -8795045yellow -994507
// 如果小于3 绿色如果3-6 为黄色如果大于6 为红色
if (num < 3) {
mProgressBar.setProgressColor(-8795045);
} else if (num < 6) {
mProgressBar.setProgressColor(-994507);
} else {
mProgressBar.setProgressColor(-2870516);
}
textView.setText("" + num);
}
});
} catch (InterruptedException e) {
e.printStackTrace();
}}
}
}).start();
}}
/**
* -13318089 green-8921493 true-8795045
* -1757165red-2870516
* -657588 yellow136,setProgressColor: -271779=35,setProgressColor: -2166956
* * * red-2870516
* green -8795045
* yellow -994507
*/
4.自定义的progress
package com.example.administrator.testz;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.ClipDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.shapes.RoundRectShape;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.ProgressBar;
/**
* @author Airsaid
* @github https://github.com/airsaid
* @date 2017/5/19
* @desc 一个可动态配置颜色、弧度，带动画的自定义 ProgressBar。
*/
public class ZProgressBar extends ProgressBar {private final Context mContext;
/** 背景颜色（默认为灰色） */
private int mBackgroundColor= Color.LTGRAY;
/** 进度条颜色（默认为红色） */
private int mProgressColor = Color.RED;
/** 背景弧度（默认为 0） */
private float mRadius = 0f;
/** 动画时长（默认 500 毫秒） */
private int mDuration = 500;
public ZProgressBar(Context context) {
this(context, null);
}public ZProgressBar(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}public ZProgressBar(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mContext = context;
initAttrs(attrs);
createDrawable();
}private void initAttrs(AttributeSet attrs) {
TypedArray a = mContext.obtainStyledAttributes(attrs, R.styleable.ZProgressBar);
mBackgroundColor = a.getColor(R.styleable.ZProgressBar_zpb_backgroundColor, mBackgroundColor);
mProgressColor = a.getColor(R.styleable.ZProgressBar_zpb_progressColor, mProgressColor);
mRadius = a.getDimension(R.styleable.ZProgressBar_zpb_radius, mRadius);
mDuration = a.getInt(R.styleable.ZProgressBar_zpb_duration, mDuration);
a.recycle();
}private void createDrawable(){
Drawable[] layers = new Drawable[2];
Drawable background = makeBackground();
Drawable progress = makeProgress();
ClipDrawable clip = new ClipDrawable(progress
, Gravity.LEFT, ClipDrawable.HORIZONTAL);
layers[0] = background;
layers[1] = clip;
LayerDrawable layer = new LayerDrawable(layers);
layer.setId(0, android.R.id.background);
layer.setId(1, android.R.id.progress);
setProgressDrawable(layer);
}/**
* 设置带动画进度
* @param progress 进度
*/
public void setAnimProgress(int progress){
startAnimator(progress);
}private void startAnimator(int progress){
ValueAnimator animator = ValueAnimator.ofInt(0, progress);
animator.setDuration(mDuration);
animator.start();
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
int value = https://www.it610.com/article/(int) valueAnimator.getAnimatedValue();
setProgress(value);
}
});
}/**
* 设置默认背景颜色
* @param color 色值
*/
public void setDefBackgroundColor(int color){
this.mBackgroundColor = color;
createDrawable();
}/**
* 设置进度条颜色
* @param color 色值
*/
public void setProgressColor(int color){
this.mProgressColor = color;
createDrawable();
}/**
* 设置背景弧度
* @param radius 弧度
*/
public void setRadius(float radius){
this.mRadius = radius;
createDrawable();
}/**
* 设置动画时长
* @param duration 时长
*/
public void setDuration(int duration){
this.mDuration = duration;
}/**
* 生成背景样式 drawable
* @return drawable
*/
private Drawable makeBackground(){
return createShape(mRadius, mBackgroundColor);
}/**
* 生成 Progress 样式 drawable
* @return drawable
*/
private Drawable makeProgress(){
return createShape(mRadius, mProgressColor);
}/**
* 根据 radius 和 color 来创建 ShapeDrawable
* @param radius 弧度
* @param color颜色
* @return drawable
*/
private Drawable createShape(float radius, int color){
ShapeDrawable shape = new ShapeDrawable();
// 设置弧度
radius = dp2px(radius);
float[] outerRadii = new float[]{radius, radius, radius, radius, radius, radius, radius, radius};
RoundRectShape roundShape = new RoundRectShape(outerRadii, null, null);
shape.setShape(roundShape);
// 设置颜色
shape.getPaint().setColor(color);
return shape;
}private int dp2px(float dpValue){
return (int)(dpValue * (mContext.getResources().getDisplayMetrics().density) + 0.5f);
}
}5.进度条的属性attrs，在values里面，有一个attrs.xml文件，添加下面的代码，没有的，自己创建
【android|动态设置Progress值和颜色】end
