android 仿QQ动态登录背景、视频背景

如上图类似效果图：

1，自定义视频类继承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);}@Overrideprotected 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);}@Overridepublic void setOnPreparedListener(MediaPlayer.OnPreparedListener l) {super.setOnPreparedListener(l);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {return super.onKeyDown(keyCode, event);}
}

MainActivity 中：

public class MainActivity extends AppCompatActivity implements View.OnClickListener {private CustomVideoView videoview;private Button   btn_enter;@Overrideprotected 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.shipin2));//播放videoview.start();//循环播放videoview.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {@Overridepublic void onCompletion(MediaPlayer mediaPlayer) {videoview.start();mediaPlayer.setOnInfoListener(new MediaPlayer.OnInfoListener() {@Overridepublic boolean onInfo(MediaPlayer mp, int what, int extra) {return false;}});}});}@Overridepublic 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@Overrideprotected void onRestart() {super.onRestart();initView();}//防止锁屏或者切出的时候，音乐在播放@Overrideprotected void onStop() {super.onStop();videoview.stopPlayback();}}

读取视频的问题：把视频放到和res/raw文件夹里面了

布局文件中：

    <?xml version="1.0" encoding="utf-8"?><FrameLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"><!--CustomVideoView 自定义视频类的位置--><application1.applicationlong.CustomVideoViewandroid:id="@+id/videoview"android:layout_width="match_parent"android:layout_height="match_parent" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:gravity="top"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="38dp"android:layout_marginRight="38dp"android:layout_marginTop="70dp"android:orientation="vertical"><EditTextandroid:id="@+id/et_phone"android:layout_width="match_parent"android:layout_height="40dp"android:layout_gravity="center_vertical"android:background="@null"android:digits="0123456789"android:gravity="center_vertical"android:hint="请输入手机号"android:inputType="number"android:maxLength="11"android:maxLines="1"android:paddingLeft="5dp"android:textColor="@android:color/white"android:textColorHint="@android:color/white"android:textSize="18sp"/><Viewandroid:layout_width="match_parent"android:layout_height="1dp"android:layout_alignParentBottom="true"android:background="@color/black"/><EditTextandroid:id="@+id/et_pwd"android:layout_width="match_parent"android:layout_height="40dp"android:layout_marginTop="20dp"android:background="@null"android:gravity="center_vertical"android:hint="请输入密码"android:inputType="textPassword"android:maxLength="11"android:maxLines="1"android:paddingLeft="5dp"android:textColor="@android:color/white"android:textColorHint="@android:color/white"android:textSize="18sp"/><Viewandroid:layout_width="match_parent"android:layout_height="1dp"android:layout_alignParentBottom="true"android:background="@color/black"/></LinearLayout><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="23dp"android:layout_marginRight="23dp"android:orientation="horizontal"><TextViewandroid:id="@+id/tv_register"android:layout_width="wrap_content"android:layout_height="wrap_content"android:padding="15dp"android:text="快速注册"android:textColor="@color/green"/><TextViewandroid:id="@+id/tv_find_pwd"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentEnd="true"android:layout_alignParentRight="true"android:layout_alignParentTop="true"android:gravity="right"android:padding="15dp"android:text="忘记密码?"android:textColor="@color/green"/></RelativeLayout><Buttonandroid:id="@+id/btn_enter"style="?android:attr/borderlessButtonStyle"android:layout_width="match_parent"android:layout_height="45dp"android:layout_gravity="center_horizontal"android:layout_marginLeft="30dp"android:layout_marginRight="30dp"android:layout_marginTop="20dp"android:background="@color/darkseagreen"android:text="登录"android:textColor="@color/white"android:textSize="18dp"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="bottom"android:paddingBottom="30dp"android:orientation="vertical"><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="90dp"android:gravity="center"android:text="使用第三方登录"android:textColor="@color/white"android:textSize="16dp"android:visibility="visible"/><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center_horizontal"android:orientation="horizontal"><ImageViewandroid:id="@+id/iv_wechat"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="10dp"android:padding="10dp"android:src="@drawable/qq"/><ImageViewandroid:id="@+id/iv_qq"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="20dp"android:layout_marginTop="10dp"android:padding="10dp"android:src="@drawable/weixin"/></LinearLayout></LinearLayout></FrameLayout>

注意：