android中调用系统拍照功能并显示拍照的图片

如果你是拍照完，利用onActivityResult获取data数据，把data数据转换成Bitmap数据，这样获取到的图片，是拍照的照片的缩略图

代码如下：

package com.example.myphotos;import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;/*** 2013-6-27 上午10:27:23* * @author 乔晓松*/
public class CameraActivity extends Activity {private Button button;private ImageView imageView;private String fileName;@SuppressLint({ "SimpleDateFormat", "SdCardPath" })@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_camera);button = (Button) findViewById(R.id.btn_camera);imageView = (ImageView) findViewById(R.id.imageView1);File file = new File("/sdcard/myImage/");file.mkdirs();// 创建文件夹button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);startActivityForResult(intent, 1);}});// Intent intent = new Intent();// intent.setAction("android.intent.action.MAIN");// intent.addCategory("android.intent.category.LAUNCHER");// intent.setFlags(0x10200000);// intent.setComponent(new ComponentName("com.android.camera",// "com.android.camera.Camera"));// startActivity(intent);}@SuppressLint({ "SdCardPath", "SimpleDateFormat" })@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == Activity.RESULT_OK) {String sdStatus = Environment.getExternalStorageState();if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用Log.v("TestFile","SD card is not avaiable/writeable right now.");return;}SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH.mm.ss");String name = format.format(new Date());fileName = "/sdcard/myImage/" + name + ".jpg";Bundle bundle = data.getExtras();Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式FileOutputStream b = null;try {b = new FileOutputStream(fileName);bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件} catch (FileNotFoundException e) {e.printStackTrace();} finally {try {b.flush();b.close();} catch (IOException e) {e.printStackTrace();}}imageView.setImageBitmap(bitmap);// 将图片显示在ImageView里}}
}

上面获取到的拍摄照片的缩略图，要想获取到拍摄照片的原图，就要在打开相机的时候，把照片保存的地址必须设置好，代码如下：

package com.example.myphotos;import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;/*** 2013-6-27 上午10:27:23* * @author 乔晓松*/
public class CameraActivity extends Activity {private Button button;private ImageView imageView;private String fileName;@SuppressLint({ "SimpleDateFormat", "SdCardPath" })@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.setContentView(R.layout.activity_camera);button = (Button) findViewById(R.id.btn_camera);imageView = (ImageView) findViewById(R.id.imageView1);File file = new File("/sdcard/myImage/");file.mkdirs();// 创建文件夹button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH.mm.ss");String name = format.format(new Date());fileName = "/sdcard/myImage/" + name + ".jpg";Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(new File(fileName)));startActivityForResult(intent, 1);}});// Intent intent = new Intent();// intent.setAction("android.intent.action.MAIN");// intent.addCategory("android.intent.category.LAUNCHER");// intent.setFlags(0x10200000);// intent.setComponent(new ComponentName("com.android.camera",// "com.android.camera.Camera"));// startActivity(intent);}@SuppressLint({ "SdCardPath", "SimpleDateFormat" })@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);if (resultCode == Activity.RESULT_OK) {String sdStatus = Environment.getExternalStorageState();if (!sdStatus.equals(Environment.MEDIA_MOUNTED)) { // 检测sd是否可用Log.v("TestFile","SD card is not avaiable/writeable right now.");return;}Bundle bundle = data.getExtras();Bitmap bitmap = (Bitmap) bundle.get("data");// 获取相机返回的数据，并转换为Bitmap图片格式FileOutputStream b = null;try {b = new FileOutputStream(fileName);bitmap.compress(Bitmap.CompressFormat.JPEG, 100, b);// 把数据写入文件} catch (FileNotFoundException e) {e.printStackTrace();} finally {try {b.flush();b.close();} catch (IOException e) {e.printStackTrace();}}imageView.setImageBitmap(bitmap);// 将图片显示在ImageView里}}
}

布局文件代码如下：

<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" ><Buttonandroid:id="@+id/btn_camera"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentRight="true"android:layout_alignParentTop="true"android:text="@string/btn_carema" /><ImageViewandroid:id="@+id/imageView1"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_alignLeft="@+id/btn_camera"android:layout_below="@+id/btn_camera"android:layout_marginTop="17dp"android:background="#999999"tools:ignore="ContentDescription" /></RelativeLayout>

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