自定义Videoview实现背景播放器引导页效果

看到QQ的动态背景引导页感觉很炫酷，我也来操作一把

先看效果

第一步，自定义Videoview

public class CustomVideoView extends VideoView {


    public CustomVideoView(Context context) {
        super(context);
    }

    public CustomVideoView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomVideoView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        //我们重新计算高度
        int width = getDefaultSize(0, widthMeasureSpec);
        int height = getDefaultSize(0, heightMeasureSpec);
        setMeasuredDimension(width, height);
    }

    @Override
    public void setOnPreparedListener(MediaPlayer.OnPreparedListener l) {
        super.setOnPreparedListener(l);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        return super.onKeyDown(keyCode, event);
    }
}

第二步，在XML中写入

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/lin"
    android:layout_width="match_parent"
    android:background="@mipmap/backgro"
    android:layout_height="match_parent"
    tools:context=".activity.LoginActivity">

    <com.zkzj.ztl_tests.view.CustomVideoView
        android:id="@+id/videoview"
        android:layout_width="match_parent"
        android:visibility="gone"
        android:background="@color/white"
        android:layout_height="match_parent" />

<!--        android:paddingTop="@dimen/dp_30"-->
    <LinearLayout
        android:id="@+id/mlin"
        android:layout_width="match_parent"
        android:gravity="top"
        android:layout_height="match_parent"
        android:orientation="vertical">


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/dp_20"
            android:layout_marginTop="60dp"
            android:gravity="center"
            android:orientation="vertical">

            <ImageView
                android:id="@+id/iv_user"
                android:layout_width="65dp"
                android:layout_height="65dp"
                android:src="@drawable/user" />

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginTop="50dp">

                <TextView
                    android:id="@+id/tv_name"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerVertical="true"
                    android:text="用户:"
                    android:textSize="16sp" />

                <EditText
                    android:id="@+id/et_name"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignParentBottom="true"
                    android:layout_marginLeft="5dp"
                    android:layout_marginBottom="13dp"
                    android:layout_toRightOf="@+id/tv_name"
                    android:background="@null"
                    android:hint="请输入用户名" />

                <ImageView
                    android:id="@+id/user_delete"
                    android:layout_width="20dp"
                    android:layout_height="20dp"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true"
                    android:src="@drawable/delete" />

                <View
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_alignParentBottom="true"
                    android:layout_marginLeft="@dimen/dp_5"
                    android:layout_marginBottom="6dp"
                    android:layout_toRightOf="@+id/tv_name"
                    android:background="@color/color_lin" />
            </RelativeLayout>

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginTop="@dimen/dp_20">

                <TextView
                    android:id="@+id/tv_password"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerVertical="true"
                    android:text="密码:"
                    android:textSize="16sp" />

                <EditText
                    android:id="@+id/et_password"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignParentBottom="true"
                    android:layout_gravity="center"
                    android:layout_marginLeft="@dimen/dp_5"
                    android:layout_marginBottom="13dp"
                    android:layout_toRightOf="@+id/tv_password"
                    android:background="@null"
                    android:hint="请输入密码"
                    android:inputType="textPassword"
                    android:maxLines="1"
                    android:textColor="@android:color/black"
                    android:textColorHint="@color/tv_gray_deep" />

                <ImageView
                    android:id="@+id/see_password"
                    android:layout_width="20dp"
                    android:layout_height="20dp"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true"
                    android:src="@mipmap/icon_nosee_pass" />

                <View
                    android:layout_width="match_parent"
                    android:layout_height="1dp"
                    android:layout_alignParentBottom="true"
                    android:layout_marginLeft="@dimen/dp_5"
                    android:layout_marginBottom="6dp"
                    android:layout_toRightOf="@+id/tv_password"
                    android:background="@color/color_lin" />
            </RelativeLayout>

<!--                android:background="@drawable/touch_bg_tuceng"-->
            <com.zkzj.ztl_tests.view.CircleImageView
                android:id="@+id/login"
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_marginTop="40dp"
                android:background="?android:attr/selectableItemBackground"
                android:contentDescription="@string/app_name"
                android:src="@drawable/login" />

        </LinearLayout>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <!--        <com.zkzj.android_commer.util.WaveView-->
            <!--            android:layout_width="@dimen/qb_px_100"-->
            <!--            android:layout_height="match_parent"-->
            <!--            android:layout_centerInParent="true"-->
            <!--            android:background="#ffffff"-->
            <!--            />-->

            <!--            <com.zkzj.android_commer.util.ScrapeView-->
            <!--                android:layout_width="@dimen/qb_px_280"-->
            <!--                android:layout_height="@dimen/qb_px_140"-->
            <!--                android:layout_centerInParent="true"-->
            <!--                />-->
            <!-- content view -->
            <TextView
                android:id="@+id/tv_ggl"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center"
                android:text="待开奖"
                android:textColor="#Ff00"
                android:textSize="30sp" />

            <com.zkzj.ztl_tests.view.ScratchView
                android:id="@+id/scratch_view"
                android:layout_width="300dp"
                android:layout_height="180dp"
                android:layout_centerInParent="true"
                android:background="@drawable/shape_ggl" />

        </RelativeLayout>
    </LinearLayout>

</FrameLayout>

第三步，在Activity中填写

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
    private CustomVideoView videoview;
    private Button          btn_enter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       // requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);
        initView();
    }
 
 
 
    /**
     * 初始化
     */
    private void initView() {
        btn_enter = (Button) findViewById(R.id.btn_enter);
        btn_enter.setOnClickListener(this);
 
        videoview = (CustomVideoView) findViewById(R.id.videoview);
        videoview.setVideoURI(Uri.parse("android.resource://"+getPackageName()+"/"+R.raw.sport));
 
        //播放
        videoview.start();
        
       //防止播放视频出现黑屏(利用Background的背景颜色)
                mVideoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                                                     @Override
                                                     public void onPrepared(MediaPlayer mp) {
                                                         mp.setOnInfoListener(new MediaPlayer.OnInfoListener() {
                                                             @Override
                                                             public boolean onInfo(MediaPlayer mp, int what, int extra) {
                                                                 if (what == MediaPlayer.MEDIA_INFO_VIDEO_RENDERING_START)
                                                                     mVideoview.setBackgroundColor(Color.TRANSPARENT);
                                                                 return true;
                                                             }
                                                         });
                                                     }
                                                 });

        //循环播放
        videoview.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mediaPlayer) {
                videoview.start();
            }
        });
 
    }
 
 
 
    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btn_enter:
                Toast.makeText(this,"登录成功了",Toast.LENGTH_SHORT).show();
                break;
        }
    }
 

   //返回重启加载
  @Override
        protected void onRestart() {
        super.onRestart();
        initView();
    }

    //防止锁屏或者切出的时候，音乐在播放
    @Override
    protected void onStop() {
        super.onStop();
        videoview.stopPlayback();
    }
}