实现调用Android手机的拍照功能

很简单，直接上示例吧

1 xml

 <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=".MainActivity" >

     <Button
         android:id="@+id/btnTakePic"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="拍照" />

     <ImageView
         android:id="@+id/imgview"
         android:layout_width="100dp"
         android:layout_height="100dp"
         android:layout_alignLeft="@+id/btnTakePic"
         android:layout_below="@+id/btnTakePic"
         android:layout_marginTop="38dp" />

 </RelativeLayout>

2 java代码

 package com.example.takepictrures;

 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import com.example.util.saveToSdCard;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
 import android.provider.MediaStore;
 import android.provider.MediaStore.Audio.Media;
 import android.app.Activity;
 import android.content.ContentValues;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.view.Menu;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.ImageView;

 public class MainActivity extends Activity implements OnClickListener {

     public Button button;
     private static final int PHOTO_GRAPH = 1;// ����
     public ImageView imageView;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         imageView = (ImageView) this.findViewById(R.id.imgview);
         button = (Button) this.findViewById(R.id.btnTakePic);
         button.setOnClickListener(this);

     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.main, menu);
         return true;
     }

     @Override
     public void onClick(View view) {
         switch (view.getId()) {
         case R.id.btnTakePic:
             Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
             startActivityForResult(intent, PHOTO_GRAPH);
             break;

         default:
             break;
         }
     }

     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (resultCode == NONE)
             return;

         if (requestCode == PHOTO_GRAPH) {

             File picture = new File(Environment.getExternalStorageDirectory()
                     + "/temp.jpg");
             // startPhotoZoom(Uri.fromFile(picture));
         }

         if (data == null)
             return;

         // if (requestCode == PHOTO_ZOOM) {
         // startPhotoZoom(data.getData());
         // }

         String fileName = "";
         if (requestCode == 1) {
             Bundle extras = data.getExtras();
             if (extras != null) {
                 Bitmap photo = extras.getParcelable("data");
                 ByteArrayOutputStream stream = new ByteArrayOutputStream();
                 photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0-100)ѹ���ļ�
                  
                     ///这儿保存到sd卡就Ok了
                 try {
                     fileName = saveToSdCard.getFileName();
                     saveToSdCard.saveMyBitmap(photo, fileName);
                 } catch (IOException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
                 }
                 imageView.setImageBitmap(photo);
             }
         }
         super.onActivityResult(requestCode, resultCode, data);
     }

     // public void startPhotoZoom(Uri uri) {
     // Intent intent = new Intent("com.android.camera.action.CROP");
     // intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
     // intent.putExtra("crop", "true");
     // // aspectX aspectY
     // intent.putExtra("aspectX", 1);
     // intent.putExtra("aspectY", 1);
     // // outputX outputY
     // intent.putExtra("outputX", 300);
     // intent.putExtra("outputY", 500);
     // intent.putExtra("return-data", true);
     // startActivityForResult(intent, PHOTO_RESOULT);
     // }

 }