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);
    // }

}