怎么用surfaceView實現(xiàn)切換效果

本篇內(nèi)容主要講解“怎么用surfaceView實現(xiàn)切換效果”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“怎么用surfaceView實現(xiàn)切換效果”吧!

需求：視頻通話界面，兩個surfaceView一個顯示本端的視圖，另一個顯示對端的視圖，由于顯示比例的問題總會存在一個覆蓋另一個的問題，為保證用戶體驗，規(guī)定小的覆蓋大的視圖上面，且點擊小的視圖可切花為大圖視圖居中，達到兩個視圖切花的功能。簡單寫一個demo完成功能的測試需求，為了較少文章的篇幅，視圖的內(nèi)容用回執(zhí)矩形代替（實際開發(fā)中顯示的是本地照相采集的數(shù)據(jù)和對端經(jīng)過opgl處理的數(shù)據(jù)）

簡單的布局

<?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:layout_width="match_parent" android:layout_height="match_parent" > <RelativeLayout android:id="@+id/remote_rl" android:layout_width="fill_parent" android:layout_height="wrap_content"  > <SurfaceView  android:id="@+id/remote_view"  android:layout_width="match_parent"  android:layout_height="match_parent"</RelativeLayout> android:layout_gravity="center" /> </RelativeLayout> <RelativeLayout android:id="@+id/local_rl" android:layout_width="wrap_content" android:layout_height="wrap_content" > <SurfaceView  android:id="@+id/local_view"  android:layout_width="wrap_content"  android:layout_height="wrap_content" /></RelativeLayout>

具體的demo實現(xiàn)

public class MainActivity extends Activity implements View.OnClickListener { public static final String TAG = "sssss"; //遠端的視圖 private SurfaceView remote_sv; // 本地的視圖 private SurfaceView local_sv; private SurfaceHolder remote_holder; private SurfaceHolder local_holder; private RelativeLayout remote_rl; private RelativeLayout local_rl; private int screenWidth; private int screenHeight; private int beforRemoteweith; private int beforLocalweith; private int beforRemoteheigth; private int beforLocalheigth; private int StateAB = 0; private int StateBA = 1; private int mSate; private int defaultLocalHeight=200; private int defaultLocalwidth=400; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); DisplayMetrics dm = getResources().getDisplayMetrics(); screenWidth = dm.widthPixels; screenHeight = dm.heightPixels - 500; remote_sv = (SurfaceView) findViewById(R.id.remote_view); remote_rl = (RelativeLayout) findViewById(R.id.remote_rl); local_rl = (RelativeLayout) findViewById(R.id.local_rl); remote_sv.setOnClickListener(this); LayoutParams params = new LayoutParams(screenWidth, screenHeight); remote_sv.setLayoutParams(params); remote_holder = remote_sv.getHolder(); // 對 surfaceView 進行操作 remote_holder.addCallback(new SurfaceHolder.Callback() {  @Override  public void surfaceCreated(SurfaceHolder holder) {  Canvas c = remote_holder.lockCanvas();  // 2.開畫  Paint p = new Paint();  p.setColor(Color.RED);  Rect aa = new Rect(0, 0, holder.getSurfaceFrame().width(),   holder.getSurfaceFrame().height());  c.drawRect(aa, p);  // 3. 解鎖畫布 更新提交屏幕顯示內(nèi)容  remote_holder.unlockCanvasAndPost(c);  }  @Override  public void surfaceChanged(SurfaceHolder holder, int format,   int width, int height) {  /**  *  Log.d(TAG,"remote_holder surfaceChanged width"+ width+"height"+height);  Canvas c = remote_holder.lockCanvas();  // 2.開畫  Paint p = new Paint();  p.setColor(Color.RED);  Rect aa = new Rect(0, 0, holder.getSurfaceFrame().width(),   holder.getSurfaceFrame().height());  c.drawRect(aa, p);  // 3. 解鎖畫布 更新提交屏幕顯示內(nèi)容  remote_holder.unlockCanvasAndPost(c);  */}  @Override  public void surfaceDestroyed(SurfaceHolder holder) {  } });// 自動運行surfaceCreated以及surfaceChanged local_sv = (SurfaceView) findViewById(R.id.local_view); local_sv.setOnClickListener(this); local_sv.setOnClickListener(this); // sv.setZOrderOnTop(false); local_sv.setZOrderOnTop(true); // 這兩個方法差不多，設置了就會浮現(xiàn)到頂部，但是，后面的看不見，要像下面設置為透明 // local_sv.setZOrderOnTop(true); // local_sv.setZOrderMediaOverlay(true); local_holder = local_sv.getHolder(); remote_holder.setFormat(PixelFormat.TRANSPARENT); local_holder.setFormat(PixelFormat.TRANSPARENT); LayoutParams params1 = new LayoutParams(defaultLocalHeight, defaultLocalwidth); local_sv.setLayoutParams(params1); remote_holder = remote_sv.getHolder(); local_holder.addCallback(new SurfaceHolder.Callback() {  @Override  public void surfaceCreated(SurfaceHolder holder) {  Canvas c = holder.lockCanvas();  // 2.開畫  Paint p = new Paint();  p.setColor(Color.YELLOW);  Rect aa = new Rect(0, 0, holder.getSurfaceFrame().width(),   holder.getSurfaceFrame().height());  c.drawRect(aa, p);  // 3. 解鎖畫布 更新提交屏幕顯示內(nèi)容  holder.unlockCanvasAndPost(c);  }  @Override  public void surfaceChanged(SurfaceHolder holder, int format,   int width, int height) { /**  *  Log.d(TAG,"local_holder surfaceChanged width"+ width+"height"+height);  Canvas c = holder.lockCanvas();  // 2.開畫  Paint p = new Paint();  p.setColor(Color.YELLOW);  Rect aa = new Rect(0, 0, holder.getSurfaceFrame().width()-50,   holder.getSurfaceFrame().height()-50);  c.drawRect(aa, p);  // 3. 解鎖畫布 更新提交屏幕顯示內(nèi)容  holder.unlockCanvasAndPost(c);  */}  @Override  public void surfaceDestroyed(SurfaceHolder holder) {  } }); zoomOpera(local_rl, local_sv, remote_sv, remote_rl, defaultLocalwidth,  defaultLocalHeight, RelativeLayout.CENTER_IN_PARENT); } @Override public void onClick(View view) { switch (view.getId()) { case R.id.local_view:  Log.d(TAG, " onClick local_view" + mSate);  if (mSate == StateAB) {  zoomlocalViewout(beforRemoteweith, beforRemoteheigth, local_sv,   remote_sv);  zoomRemoteViewint(beforLocalweith, beforLocalheigth);  mSate = StateBA;  }  break; case R.id.remote_view:  Log.d(TAG, " onClick emote_view" + mSate);  if (mSate == StateBA) {  zoomRemoteout(beforRemoteweith, beforRemoteheigth, local_sv,   remote_sv);  zoomlocalViewint(beforLocalweith, beforLocalheigth);  mSate = StateAB;  }  break; default:  break; } }//放大遠端的視圖 private void zoomRemoteout(int weith3, int heigth3, SurfaceView localView,  SurfaceView remoteView) { beforLocalheigth = localView.getMeasuredHeight(); beforLocalweith = localView.getMeasuredWidth(); beforRemoteheigth = remoteView.getMeasuredHeight(); beforRemoteweith = remoteView.getMeasuredWidth(); Log.d(TAG, "zoomRemoteout beforLocalheigth" + beforLocalheigth  + "beforLocalweith" + beforLocalweith + "beforRemoteheigth"  + beforRemoteheigth + "beforRemoteweith" + beforLocalweith); zoomOpera(local_rl, local_sv, remote_sv, remote_rl, screenWidth,  beforLocalheigth, RelativeLayout.CENTER_IN_PARENT); }//具體的視圖操作 private void zoomOpera(View sourcView, SurfaceView beforeview,  SurfaceView afterview, View detView, int beforLocalweith,  int beforLocalHeigth, int rule) { LayoutParams params1 = new LayoutParams(LayoutParams.MATCH_PARENT,  LayoutParams.MATCH_PARENT); Log.w(TAG, "beforLocalheigth = " + beforLocalheigth  + "; beforLocalweith = " + beforLocalweith); params1.addRule(rule, RelativeLayout.TRUE); afterview.setLayoutParams(params1); afterview.setBackgroundResource(android.R.color.transparent); params1 = new LayoutParams(beforLocalweith, beforLocalHeigth); params1.addRule(rule, RelativeLayout.TRUE); detView.setLayoutParams(params1); }//縮小遠端的視圖 private void zoomRemoteViewint(int weith3, int heigth3) { RelativeLayout paretview = (RelativeLayout) local_rl.getParent(); paretview.removeView(remote_rl); paretview.removeView(local_rl); zoomOpera(local_rl, local_sv, remote_sv, remote_rl, beforLocalweith,  beforLocalheigth, RelativeLayout.ALIGN_PARENT_TOP); Log.d(TAG, "paretview" + paretview.getChildCount()); paretview.addView(local_rl); paretview.addView(remote_rl); remote_sv.setZOrderOnTop(true); }//放大本端的視圖 private void zoomlocalViewout(int weith3, int heigth3,  SurfaceView localView, SurfaceView remoteView) { beforLocalheigth = localView.getMeasuredHeight(); beforLocalweith = localView.getMeasuredWidth(); beforRemoteheigth = remoteView.getMeasuredHeight(); beforRemoteweith = remoteView.getMeasuredWidth(); Log.d(TAG, "zoomlocalViewout beforLocalheigth" + beforLocalheigth  + "beforLocalweith" + beforLocalweith + "beforRemoteheigth"  + beforRemoteheigth + "beforRemoteweith" + beforRemoteweith); zoomOpera(remote_rl, remote_sv, local_sv, local_rl, beforRemoteweith,  beforRemoteheigth, RelativeLayout.CENTER_IN_PARENT); }//減小本端的視圖 private void zoomlocalViewint(int weith3, int heigth3) { RelativeLayout paretview = (RelativeLayout) local_rl.getParent(); paretview.removeView(remote_rl); paretview.removeView(local_rl); zoomOpera(remote_rl, remote_sv, local_sv, local_rl, beforRemoteweith,  beforRemoteheigth, RelativeLayout.ALIGN_PARENT_TOP); paretview.addView(remote_rl); paretview.addView(local_rl); local_sv.setZOrderOnTop(true); }}

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