带进度条的按钮

来源：互联网发布：计算机的软件组成编辑：程序博客网时间：2024/04/30 05:15

一、定义ProgressButton的自定义属性

在attrs文件中定义ProgressButton的基本属性：主要有进度条颜色、进度条的背景颜色、按钮正常和被点击状态时的颜色、按钮的边角半径和是否显示进度信息。

<declare-styleable name="progressbutton">    <attr name="progressColor" format="color" />    <attr name="progressBgColor" format="color" />    <attr name="buttonNormalColor" format="color" />    <attr name="buttonPressedColor" format="color" />    <attr name="buttonCornerRadius" format="dimension"/>    <attr name="showProgressNum" format="boolean"/></declare-styleable>

二、继承Button自定义ProgressButton

package com.cxmscb.cxm.progressbutton;

import Android.annotation.TargetApi;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.StateListDrawable;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.Button;

/**
* Created by cxm on 2016/9/7.
*/
public class ProgressButton extends Button {

private int mProgress; //当前进度private int mMaxProgress = 100; //最大进度：默认为100private int mMinProgress = 0;//最小进度：默认为0private GradientDrawable mProgressDrawable;// 加载进度时的进度颜色private GradientDrawable mProgressDrawableBg;// 加载进度时的背景色private StateListDrawable mNormalDrawable; // 按钮在不同状态的颜色效果private boolean isShowProgress;  //是否展示进度private boolean isFinish; // 结束状态private boolean isStop;// 停止状态private boolean isStart ; // 刚开始的状态private OnStateListener onStateListener; //结束时的监听private float cornerRadius; // 圆角半径public ProgressButton(Context context, AttributeSet attrs) {    super(context, attrs);    init(context, attrs);}public ProgressButton(Context context, AttributeSet attrs, int defStyleAttr) {    super(context, attrs, defStyleAttr);    init(context, attrs);}@TargetApi(Build.VERSION_CODES.LOLLIPOP)public ProgressButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {    super(context, attrs, defStyleAttr, defStyleRes);    init(context, attrs);}private void init(Context context,AttributeSet attributeSet) {    // 初始化按钮状态Drawable    mNormalDrawable = new StateListDrawable();    // 初始化进度条Drawable    mProgressDrawable = (GradientDrawable)getResources().getDrawable(            R.drawable.rect_progress).mutate();    // 初始化进度条背景Drawable    mProgressDrawableBg = (GradientDrawable)getResources().getDrawable(            R.drawable.rect_progressbg).mutate();    TypedArray attr =  context.obtainStyledAttributes(attributeSet, R.styleable.progressbutton);    try {        // 默认的圆角大小        float defValue = getResources().getDimension(R.dimen.corner_radius);        // 获取圆角大小        cornerRadius = attr.getDimension(R.styleable.progressbutton_buttonCornerRadius, defValue);        // 获取是否显示进度信息的属性        isShowProgress = attr.getBoolean(R.styleable.progressbutton_showProgressNum,true);        // 给按钮的状态Drawable添加被点击时的状态        mNormalDrawable.addState(new int[]{android.R.attr.state_pressed},                getPressedDrawable(attr));        // 给按钮的状态Drawable添加其他时候的状态                mNormalDrawable.addState(new int[] { }, getNormalDrawable(attr));        // 获取进度条颜色属性值        int defaultProgressColor = getResources().getColor(R.color.purple_progress);        int progressColor = attr.getColor(R.styleable.progressbutton_progressColor,defaultProgressColor);        // 设置进度条Drawable的颜色        mProgressDrawable.setColor(progressColor);        // 获取进度条背景颜色属性值        int defaultProgressBgColor = getResources().getColor(R.color.progress_bg);        int progressBgColor = attr.getColor(R.styleable.progressbutton_progressBgColor,defaultProgressBgColor);        // 设置进度条背景Drawable的颜色        mProgressDrawableBg.setColor(progressBgColor);    } finally {        attr.recycle();    }    // 初始化状态    isFinish = false;    isStop = true;    isStart = false;    // 设置圆角    mProgressDrawable.setCornerRadius(cornerRadius);    mProgressDrawableBg.setCornerRadius(cornerRadius);    // 设置按钮背景为状态Drawable    setBackgroundCompat(mNormalDrawable);}@Overrideprotected void onDraw(Canvas canvas) {    if (mProgress > mMinProgress && mProgress <= mMaxProgress && !isFinish) {        // 更新进度：        float scale = (float) getProgress() / (float) mMaxProgress;        float indicatorWidth = (float) getMeasuredWidth() * scale;        mProgressDrawable.setBounds(0, 0, (int) indicatorWidth, getMeasuredHeight());        mProgressDrawable.draw(canvas);        // 进度完成时回调方法，并更变状态        if(mProgress==mMaxProgress) {            setBackgroundCompat(mProgressDrawable);            isFinish = true;            if(onStateListener!=null) {                onStateListener.onFinish();            }        }    }    super.onDraw(canvas);}// 设置进度信息public void setProgress(int progress) {    if(!isFinish&&!isStop){        mProgress = progress;        if(isShowProgress) setText(mProgress + " %");        // 设置背景        setBackgroundCompat(mProgressDrawableBg);        invalidate();    }}// 获取进度public int getProgress() {    return mProgress;}// 设置为停止状态public void setStop(boolean stop) {    isStop = stop;    invalidate();}public boolean isStop() {    return isStop;}public boolean isFinish() {    return isFinish;}// 切换状态：public void toggle(){    if(!isFinish&&isStart){        if(isStop){            setStop(false);            onStateListener.onContinue();        } else {            setStop(true);            onStateListener.onStop();        }    }else {        setStop(false);        isStart = true;    }}// 设置按钮背景private void setBackgroundCompat(Drawable drawable) {    int pL = getPaddingLeft();    int pT = getPaddingTop();    int pR = getPaddingRight();    int pB = getPaddingBottom();    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {        setBackground(drawable);    } else {        setBackgroundDrawable(drawable);    }    setPadding(pL, pT, pR, pB);}// 初始化状态public void initState(){    setBackgroundCompat(mNormalDrawable);    isFinish = false;    isStop = true;    isStart = false;    mProgress = 0;}// 获取状态Drawable的正常状态下的背景private Drawable getNormalDrawable( TypedArray attr) {    GradientDrawable drawableNormal =            (GradientDrawable) getResources().getDrawable(R.drawable.rect_normal).mutate();// 修改时就不会影响其它drawable对象的状态    drawableNormal.setCornerRadius(cornerRadius); // 设置圆角半径    int defaultNormal =  getResources().getColor(R.color.blue_normal);    int colorNormal =  attr.getColor(R.styleable.progressbutton_buttonNormalColor,defaultNormal);    drawableNormal.setColor(colorNormal);//设置颜色    return drawableNormal;}// 获取按钮被点击时的Drawableprivate Drawable getPressedDrawable( TypedArray attr) {    GradientDrawable drawablePressed =            (GradientDrawable) getResources().getDrawable(R.drawable.rect_pressed).mutate();// 修改时就不会影响其它drawable对象的状态    drawablePressed.setCornerRadius(cornerRadius);// 设置圆角半径    int defaultPressed = getResources().getColor(R.color.blue_pressed);    int colorPressed = attr.getColor(R.styleable.progressbutton_buttonPressedColor,defaultPressed);    drawablePressed.setColor(colorPressed);//设置颜色    return drawablePressed;}// 设置状态监听接口interface OnStateListener{    abstract void onFinish();    abstract void onStop();    abstract void onContinue();}public void setOnStateListener(OnStateListener onStateListener){    this.onStateListener = onStateListener;}public void isShowProgressNum(boolean b){    this.isShowProgress = b;}

}

三、ProgressButton的使用示例：

public class MainActivity extends AppCompatActivity {

private ProgressButton progressButton;private ProgressThread pt;private Boolean isPause = false;public Handler handler = new Handler(){    @Override    public void handleMessage(Message msg) {        progressButton.setProgress(msg.arg1);    }};private int z=0;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    progressButton = (ProgressButton) findViewById(R.id.pb);    progressButton.setTag(0);    progressButton.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            // 防止开启多个异步线程            if((Integer)progressButton.getTag()==0) {                pt = new ProgressThread();                pt.start();                progressButton.setTag(1);            }            if(!progressButton.isFinish()){                progressButton.toggle();            }        }    });    progressButton.setOnStateListener(new ProgressButton.OnStateListener() {        @Override        public void onFinish() {            isPause = true;            synchronized (this) {                pt.interrupt();            }            progressButton.setText("完 成");            // progressButton.initState();            Toast.makeText(MainActivity.this,"Finish",Toast.LENGTH_SHORT).show();        }        @Override        public void onStop() {            Log.i("zz","stop");            progressButton.setText("继 续");            isPause = true;        }        @Override        public void onContinue() {            Log.i("zz","continue");            isPause = false;        }    });}public  class ProgressThread extends Thread{    private int z = 0;    @Override    public void run() {       while (true) {           synchronized (this) {               if (!isPause) {                   z += 2;                   Message msg = Message.obtain();                   msg.arg1 = z;                   handler.sendMessage(msg);                   try {                       Thread.sleep(100);                   } catch (InterruptedException e) {                       e.printStackTrace();                   }               }           }       }        }    }@Overrideprotected void onDestroy() {    super.onDestroy();    handler.removeCallbacksAndMessages(null);}

}

0 0