安卓加载中对话框

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以前网上找的感觉挺好看的，分享一下。
效果图
这里写图片描述

SpotsDialog

import android.animation.Animator;import android.animation.ObjectAnimator;import android.app.AlertDialog;import android.content.Context;import android.os.Bundle;import com.c.mysmall.app.main.R;/** * 加载中 */public class SpotsDialog extends AlertDialog {    private static final int DELAY = 150;    private static final int DURATION = 1500;    private int size;    private AnimatedView[] spots;    private AnimatorPlayer animator;    public SpotsDialog(Context context) {        this(context, R.style.SpotsDialogDefault);    }    public SpotsDialog(Context context, int theme) {        super(context, theme);    }    public SpotsDialog(Context context, boolean cancelable, OnCancelListener cancelListener) {        super(context, cancelable, cancelListener);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.dialog);        setCanceledOnTouchOutside(false);        initProgress();    }    @Override    protected void onStart() {        super.onStart();        animator = new AnimatorPlayer(createAnimations());        animator.play();    }    @Override    protected void onStop() {        super.onStop();        animator.stop();    }    //~    private void initProgress() {        ProgressLayout progress = (ProgressLayout) findViewById(R.id.progress);        size = progress.getSpotsCount();        spots = new AnimatedView[size];        int size = getContext().getResources().getDimensionPixelSize(R.dimen.spot_size);        int progressWidth = getContext().getResources().getDimensionPixelSize(R.dimen.progress_width);        for (int i = 0; i < spots.length; i++) {            AnimatedView v = new AnimatedView(getContext());            v.setBackgroundResource(R.drawable.dlg_spot);            v.setTarget(progressWidth);            v.setXFactor(-1f);            progress.addView(v, size, size);            spots[i] = v;        }    }    private Animator[] createAnimations() {        Animator[] animators = new Animator[size];        for (int i = 0; i < spots.length; i++) {            Animator move = ObjectAnimator.ofFloat(spots[i], "xFactor", 0, 1);            move.setDuration(DURATION);            move.setInterpolator(new HesitateInterpolator());            move.setStartDelay(DELAY * i);            animators[i] = move;        }        return animators;    }}

AnimatedView

class AnimatedView extends View {        private int target;        public AnimatedView(Context context) {            super(context);        }        public float getXFactor() {            return getX() / target;        }        public void setXFactor(float xFactor) {            setX(target * xFactor);        }        public void setTarget(int target) {            this.target = target;        }        public int getTarget() {            return target;        }    }

AnimatorPlayer

class AnimatorPlayer extends AnimatorListenerAdapter {        private boolean interrupted = false;        private Animator[] animators;        public AnimatorPlayer(Animator[] animators) {            this.animators = animators;        }        @Override        public void onAnimationEnd(Animator animation) {            if (!interrupted) animate();        }        public void play() {            animate();        }        public void stop() {            interrupted = true;        }        private void animate() {            AnimatorSet set = new AnimatorSet();            set.playTogether(animators);            set.addListener(this);            set.start();        }    }

HesitateInterpolator

class HesitateInterpolator implements Interpolator {        private double POW = 1.0/2.0;        @Override        public float getInterpolation(float input) {            return input < 0.5                    ? (float) Math.pow(input * 2, POW) * 0.5f                    : (float) Math.pow((1 - input) * 2, POW) * -0.5f + 1;        }    }

ProgressLayout

class ProgressLayout extends FrameLayout {        private static final int DEFAULT_COUNT = 5;        private int spotsCount;        public ProgressLayout(Context context) {            this(context, null);        }        public ProgressLayout(Context context, AttributeSet attrs) {            this(context, attrs, 0);        }        public ProgressLayout(Context context, AttributeSet attrs, int defStyleAttr) {            super(context, attrs, defStyleAttr);            init(attrs, defStyleAttr, 0);        }        @TargetApi(Build.VERSION_CODES.LOLLIPOP)        public ProgressLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {            super(context, attrs, defStyleAttr, defStyleRes);            init(attrs, defStyleAttr, defStyleRes);        }        private void init(AttributeSet attrs, int defStyleAttr, int defStyleRes) {            TypedArray a = getContext().getTheme().obtainStyledAttributes(                    attrs,                    R.styleable.Dialog,                    defStyleAttr, defStyleRes);            spotsCount = a.getInt(R.styleable.Dialog_DialogSpotCount, DEFAULT_COUNT);            a.recycle();        }        public int getSpotsCount() {            return spotsCount;        }    }

attrs文件

<resources>    <declare-styleable name="Dialog">        <attr name="DialogTitleAppearance" format="reference" />        <attr name="DialogTitleText" format="reference|string" />        <attr name="DialogSpotColor" format="reference|color"/>        <attr name="DialogSpotCount" format="integer"/>    </declare-styleable></resources>

styles文件

<style name="SpotsDialogDefault" parent="android:Theme.DeviceDefault.Light.Dialog">    <item name="DialogTitleAppearance">@android:style/TextAppearance.Medium</item>    <item name="DialogTitleText">Loading…</item>    <item name="DialogSpotCount">5</item></style>

dialog.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:id="@+id/title"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="@dimen/title_margin"        android:layout_gravity="center"        android:textAppearance="?attr/DialogTitleAppearance"        android:text="?attr/DialogTitleText"/>    <com.example.ProgressLayout        android:id="@+id/progress"        android:layout_width="@dimen/progress_width"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_margin="@dimen/progress_margin"/></LinearLayout>

dlg_spot.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval">    <solid android:color="@android:color/holo_blue_dark" /></shape>

dimen.xml

    <dimen name="spot_size">6dp</dimen>    <dimen name="title_margin">10dp</dimen>    <dimen name="progress_margin">24dp</dimen>    <dimen name="progress_width">250dp</dimen>

源码下载：http://download.csdn.net/detail/qq517807659/9728634

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