Android中间向两端，两端向中间并发前进的进度条，Android自定义ProgressBar进度条

功能说明

项目需要，需要做一个类微信小视频拍摄程序，需要用到进度条，于是做了个简单的中间向两端，两端向中间并发前进的进度条，使用线性布局作为基础控件，控件拿来即可直接使用，就不多做累赘。

新建测试用布局Xml文件（包名请自定）：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <com.example.smallvideo.BothLineProgress         android:id="@+id/mybp"        android:layout_width="0dp"        android:layout_height="3dp"        android:background="#ff8a00"        android:layout_gravity="center_horizontal" />                <Button         android:id="@+id/btaas"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="按下"/></LinearLayout>

自定义进度条，设置Mode可设置方向，详细说明都在代码内：

package com.example.smallvideo;import java.util.Timer;import java.util.TimerTask;import android.content.Context;import android.graphics.Color;import android.os.Handler;import android.util.AttributeSet;import android.util.Log;import android.widget.LinearLayout;/** * 中间向两端或两端向中间并发进度条 * @author Jaiky * @date 2015年7月1日 * PS: Not easy to write code, please indicate. */public class BothLineProgress extends LinearLayout {private Context context;private Handler handler = new Handler();private android.view.ViewGroup.LayoutParams layoutParams = null;//现在高度private float nowWidth = 0;//屏幕宽度private int screenWidth = 0;//行走距离private float runDistance = 1;//计时器private Timer timer;//回调接口private OnBothLineProgressFinishListener obpf;//模式，默认为中间到两端private int mode = MODE_CENTER_TO_BOTH;/** * 中间到两端延伸 */public static final int MODE_CENTER_TO_BOTH = 0;/** * 两端到中间延伸 */public static final int MODE_BOTH_TO_CENTER = 1;//计算耗时用的，可注释private long starttime = 0;    public BothLineProgress(Context context) {    super(context);    this.context = context;    init();}    public BothLineProgress(Context context, AttributeSet attrs) {super(context, attrs);this.context = context;init();}    public BothLineProgress(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);this.context = context;init();}private void init() {screenWidth = context.getResources().getDisplayMetrics().widthPixels;//setBackgroundColor(Color.parseColor("#ff8a00"));}/** * 开始启动进度条 * @param duration 需要多少毫秒跑完进度 （1秒 = 1000毫秒） * @param runTime 频率，默认为10，越大更新频率越慢 * @param mode 模式，可选（BothLineProgress.MODE_CENTER_TO_BOTH） 或（BothLineProgress.MODE_BOTH_TO_CENTER） */public void startRunProgress(long duration, int runTime, int mode) {this.mode = mode;if (runTime < 1) runTime = 10;layoutParams = getLayoutParams();nowWidth = layoutParams.width;//跑满屏幕或设置XML的进度条长度，需要每10毫秒跑多远距离（根据需求设置布局XML文件android:layout_width="0dp"）if (mode == MODE_CENTER_TO_BOTH) {runDistance = (float)(screenWidth - nowWidth) / ((float)duration / (float)runTime);}else {if (nowWidth <= 0) {nowWidth = screenWidth;}runDistance = (float)nowWidth / ((float)duration / (float)runTime);}Log.e("XXX", "每次跑：" + runDistance + "  开始宽度：" + nowWidth + "   频率：" + runTime);timer = new Timer();timer.schedule(new MyTimerTask(), 0, runTime);starttime = System.currentTimeMillis();}/** * 停止进度条 */public void stopProgress(){if (timer != null) {timer.cancel();}}/** * 设置进度条颜色 * @param colorString 颜色码，如“#000000” */public void setPorgressColor(String colorString) {setBackgroundColor(Color.parseColor(colorString));}//计时器任务private class MyTimerTask extends TimerTask{@Overridepublic void run() {boolean isnext = true;if (mode == MODE_CENTER_TO_BOTH) isnext = (nowWidth < screenWidth) ? true : false;else isnext = (nowWidth > 0) ? true : false; if (isnext) {if (mode == MODE_CENTER_TO_BOTH) nowWidth = nowWidth + runDistance; else nowWidth = nowWidth - runDistance;Log.i("XXX", nowWidth + "");handler.post(new Runnable() {@Overridepublic void run() {//设置新布局layoutParams.width = (int)nowWidth;setLayoutParams(layoutParams);}});}else {long c = System.currentTimeMillis() - starttime;Log.e("XXX", "时间：" + c);//回调，到UI线程更新if (obpf != null) {handler.post(new Runnable() {@Overridepublic void run() {obpf.onFinished();}});}timer.cancel();}}}/** * 设置进度条完成回调接口 * @param obpf */public void setOnBothLineProgressFinishListener(OnBothLineProgressFinishListener obpf) {this.obpf = obpf;}/** * 进度条处理完成回调接口 * @author Jaiky * @date 2015年7月1日 * PS: Not easy to write code, please indicate. */public interface OnBothLineProgressFinishListener {public void onFinished();}/** * DP转PX * @param dpValue * @return */    public int dip2px(float dpValue) {          final float scale = context.getResources().getDisplayMetrics().density;          return (int) (dpValue * scale + 0.5f);      }}

新建测试TestActivity文件，注意在AndroidManifest中添加：

package com.example.smallvideo;import com.example.smallvideo.BothLineProgress.OnBothLineProgressFinishListener;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class TestActivity extends Activity{ BothLineProgress bp;Button btaas;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.item);bp = (BothLineProgress) findViewById(R.id.mybp);btaas = (Button) findViewById(R.id.btaas);btaas.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {    //10秒完成bp.startRunProgress(10000L, 10, BothLineProgress.MODE_BOTH_TO_CENTER);btaas.setEnabled(false);}});bp.setOnBothLineProgressFinishListener(new OnBothLineProgressFinishListener() {@Overridepublic void onFinished() {Toast.makeText(getApplicationContext(), "进度条完成了", Toast.LENGTH_SHORT).show();btaas.setEnabled(true);}});}}

声明

欢迎转载，但请保留文章原始出处
作者：Jaiky_杰哥 
出处：http://blog.csdn.net/jaikydota163/article/details/46712057