Merge pull request hzuapps#576 from chenqiuwen/master

#1 hzuapps#88 hzuapps#89 hzuapps#90 实验1、2、3、4

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903105/Net1314080903105MainActivity.java

@@ -0,0 +1,64 @@
+package edu.hzuapps.androidworks.homeworks.net1314080903105;
+
+import java.io.IOException;
+
+import android.hardware.Camera;
+import android.os.Bundle;
+import android.app.Activity;
+import android.view.Menu;
+import android.view.SurfaceHolder;
+import android.view.SurfaceHolder.Callback;
+import android.view.SurfaceView;
+/*整个预览的流程是建立一个surface，
+获取surface得控制器surfaceholder，
+设立surface的窗口previewdisplay，
+最后开始预览startpreview。
+当然最后还要添加相机相关的权限。*/
+public class Net1314080903105MainActivity extends Activity {
+    private SurfaceView mView=null;		//是建立一个surface
+    private SurfaceHolder mHolder=null;
+    private Camera mCamera=null;
+    @SuppressWarnings("deprecation")
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main_net131408903105);
+        mView=(SurfaceView)this.findViewById(R.id.surfaceView1);
+        mHolder=mView.getHolder();		//获取surface得控制器surfaceHolder
+        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
+//		mHolder.setFixedSize(1, 700); // 设置Surface分辨率
+//		mHolder.setSizeFromLayout();
+//		mHolder.setKeepScreenOn(true);// 屏幕常亮
+        mHolder.addCallback(new Callback(){
+
+            @Override
+            public void surfaceChanged(SurfaceHolder holder, int format,
+                                       int width, int height) {
+                // TODO Auto-generated method stub
+
+            }
+
+            @Override
+            public void surfaceCreated(SurfaceHolder holder) {
+                // TODO Auto-generated method stub
+                mCamera=Camera.open(1);					//若要升级增加摄像头选择则应该设置try,catch
+                try {
+                    mCamera.setPreviewDisplay(mHolder);	//设立surface的窗口PreviewDisplay
+                    mCamera.setDisplayOrientation(90);	//设置摄像头角度，以后若有需要可以用来调试手机横竖显示
+                } catch (IOException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                }
+                mCamera.startPreview();
+            }
+
+            @Override
+            public void surfaceDestroyed(SurfaceHolder holder) {
+                // TODO Auto-generated method stub
+                mCamera.startPreview();
+                mCamera.release();
+            }});
+    }
+
+
+}

app/src/main/res/layout/activity_main_net131408903105.xml

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+<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"
+    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=".Net1314080903105MainActivity" >
+
+    <SurfaceView
+        android:id="@+id/surfaceView1"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true" />
+
+</RelativeLayout>

edu/hzuapps/androidworks/homeworks/net314080903105/Net1314080903105Activity.java

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+