摄像头拍照 

这里面包含两种调用摄像头的方法，一种是自己调用摄像头 ，一种是直接调用系统的摄像头
 Activity
 1 package cn.itcast.camera;
 2 
 3 import java.io.File;
 4 
 5 import android.app.Activity;
 6 import android.content.Intent;
 7 import android.graphics.Bitmap;
 8 import android.graphics.BitmapFactory;
 9 import android.hardware.Camera;
10 import android.hardware.Camera.Parameters;
11 import android.hardware.Camera.PictureCallback;
12 import android.net.Uri;
13 import android.os.Bundle;
14 import android.os.Parcelable;
15 import android.provider.MediaStore;
16 import android.view.View;
17 import android.widget.ImageView;
18 
19 public class DemoActivity extends Activity {
20     private ImageView iv;
21     @Override
22     public void onCreate(Bundle savedInstanceState) {
23         super.onCreate(savedInstanceState);
24         setContentView(R.layout.main);
25         iv = (ImageView) findViewById(R.id.iv);
26     }
27     
28     
29     public void click(View view){
30    /*     Camera camera = Camera.open();
31         Parameters  params = camera.getParameters();
32         params.set("picture-size-values", "640x480");
33         params.set("jpeg-quality","60");
34         //String mode = params.flatten();
35         camera.setParameters(params);
36     //    System.out.println(mode);
37 //        camera.startPreview();
38         camera.takePicture(null, null, new PictureCallback() {
39             
40             @Override
41             public void onPictureTaken(byte[] data, Camera camera) {
42                 System.out.println("pic taked");
43                 Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
44                 iv.setImageBitmap(bitmap);
45                 //camera.stopPreview();
46             }
47         });*/
48 /*         <intent-filter>
49          <action android:name="android.media.action.IMAGE_CAPTURE" />
50          <category android:name="android.intent.category.DEFAULT" />
51      </intent-filter>*/
52         Intent intent = new Intent();
53         intent.setAction("android.media.action.IMAGE_CAPTURE");
54         intent.addCategory("android.intent.category.DEFAULT");
55         File file = new File("/sdcard/bbb.jpg");
56         intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(file));
57         startActivityForResult(intent, 0);
58         
59     }
60     @Override
61     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
62         super.onActivityResult(requestCode, resultCode, data);
63         if(data!=null){
64             Bitmap  image  = data.getParcelableExtra("data");
65             iv.setImageBitmap(image);
66         }
67         
68     }
69     
70     
71 }

布局文件

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="fill_parent"
 5     android:orientation="vertical" >
 6 
 7 
 8     <Button
 9         android:id="@+id/button1"
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:onClick="click"
13         android:text="拍照" />
14 
15     <ImageView
16         android:id="@+id/iv"
17         android:layout_width="wrap_content"
18         android:layout_height="wrap_content"
19         android:src="@drawable/ic_launcher" />
20 </LinearLayout>

AndroidManifest.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="cn.itcast.camera"
 4     android:versionCode="1"
 5     android:versionName="1.0" >
 6 
 7     <uses-sdk android:minSdkVersion="8" />
 8 
 9     <uses-permission android:name="android.permission.CAMERA" />
10 
11     <uses-feature android:name="android.hardware.camera" />
12     <uses-feature android:name="android.hardware.camera.autofocus" />
13 
14     <application
15         android:icon="@drawable/ic_launcher"
16         android:label="@string/app_name" >
17         <activity
18             android:name=".DemoActivity"
19             android:label="@string/app_name" >
20             <intent-filter>
21                 <action android:name="android.intent.action.MAIN" />
22 
23                 <category android:name="android.intent.category.LAUNCHER" />
24             </intent-filter>
25         </activity>
26     </application>
27 
28 </manifest>

 

 
posted @ 2013-01-19 19:41  王世桢  阅读(306)  评论(0)  编辑  收藏  举报