开源项目Meizhi学习笔记--VideoImageView

VideoImageView

黑发不知勤学早，看看又是白头翁

VideoImageView

用于显示视频的预览图，但是在Meizhi项目中并未触发效果。我单独把它弄成一个项目，以下是效果图。



布局代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_video_image_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="rc.loveq.customdialog.VideoImageViewActivity">
<rc.loveq.customdialog.VideoImageView
android:id="@+id/video_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#2d1e1b"
android:scaleType="centerCrop"/>
/>
</RelativeLayout>

VideoImageViewActivity

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_video_image_view);
mVideoImage = (VideoImageView) findViewById(R.id.video_image);
mVideoImage.setImageResource(R.mipmap.ic_launcher);
}

VideoImageView

public class VideoImageView extends ImageView implements Animator.AnimatorListener {

private boolean scale = false;

public VideoImageView(Context context) {
this(context, null);
}

public VideoImageView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}

public VideoImageView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
nextAnimation();
}

private void nextAnimation() {
AnimatorSet anim = new AnimatorSet();
if (scale) {
anim.playTogether(ObjectAnimator.ofFloat(this, "scaleX", 1.5f, 1f),
ObjectAnimator.ofFloat(this, "scaleY", 1.5f, 1f));
} else {
anim.playTogether(ObjectAnimator.ofFloat(this, "scaleX", 1, 1.5f),
ObjectAnimator.ofFloat(this, "scaleY", 1, 1.5f));
}
anim.setDuration(10987);
anim.addListener(this);
anim.start();
scale = !scale;
}

@Override public void onAnimationCancel(Animator arg0) {
}

@Override public void onAnimationEnd(Animator animator) {
nextAnimation();
}

@Override public void onAnimationRepeat(Animator arg0) {
}

@Override public void onAnimationStart(Animator arg0) {
}
}

Android属性动画完全解析(上)，初识属性动画的基本用法

Android属性动画完全解析(中)，ValueAnimator和ObjectAnimator的高级用法

Android属性动画完全解析(下)，Interpolator和ViewPropertyAnimator的用法