Android游戏开发学习笔记（四）：Camera图像采集

一、为相机添加权限。在AndroidManifest.xml文件的</application>之后，添加相机使用的权限：
<uses-permission android:name="android.permission.CAMERA"/>
二、编写布局文件main.xml，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <Su易做图ceView
        android:id="@+id/su易做图ceView"
        android:layout_width="320px"
        android:layout_height="240px"
        />
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        >
        <Button
            android:id="@+id/btn1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="打开"
            />
        <Button
            android:id="@+id/btn2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="关闭"
            />
    </LinearLayout>
</LinearLayout>
三、编写MainActivity.java代码。
package game.test;

import android.app.Activity;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.Su易做图ceHolder;
import android.view.Su易做图ceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity implements Su易做图ceHolder.Callback {
    Camera myCamera;
    Su易做图ceView mySu易做图ceView;
    Su易做图ceHolder mySu易做图ceHolder;
    Button btn1, btn2;
    boolean isPreview = false;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mySu易做图ceView = (Su易做图ceView) findViewById(R.id.su易做图ceView);
        btn1 = (Button) findViewById(R.id.btn1);
        btn2 = (Button) findViewById(R.id.btn2);
        mySu易做图ceHolder = mySu易做图ceView.getHolder();
        mySu易做图ceHolder.addCallback(this);
        mySu易做图ceHolder.setType(Su易做图ceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        btn1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                initCamera();
            }
        });
        btn2.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (myCamera != null && isPreview) {
                    myCamera.stopPreview();
                    myCamera.release();
                    myCamera = null;
                    isPreview = false;
                }
            }
        });
    }

    public void initCamera() {
        if (!isPreview) {
            myCamera = Camera.open();
        }
        if (myCamera != null && !isPreview) {
            try {
                myCamera.setPreviewDisplay(mySu易做图ceHolder);
                myCamera.startPreview();
            } catch (Exception e) {
                e.printStackTrace();
            }
            isPreview = true;
        }
    }

    @Override
    public void su易做图ceCreated(Su易做图ceHolder holder) {
        // TODO Auto-generated method stub
    }

    @Override
    public void su易做图ceChanged(Su易做图ceHolder holde

补充：移动开发 , Android ,