Java乔晓松-android中调用系统拍照功能并显示拍照的图片

时间：2024-01-06 18:13:20

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" })

	@Override

	protected 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() {

			@Override

			public 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" })

	@Override

	protected 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" })

	@Override

	protected 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() {

			@Override

			public 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" })

	@Override

	protected 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" >

    <Button

        android: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" />

    <ImageView

        android: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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