java调用手机拍照功能_Android调用手机拍照功能的方法

本文实例讲述了Android调用手机拍照功能的方法。分享给大家供大家参考。具体如下&＃xff1a;

一、main.xml布局文件&＃xff1a;

android:orientation&＃61;"vertical"

android:layout_width&＃61;"fill_parent"

android:layout_height&＃61;"fill_parent">

android:adjustViewBounds&＃61;"true"

android:layout_gravity&＃61;"center"

android:minWidth&＃61;"150dip"

android:minHeight&＃61;"150dip"

android:layout_width&＃61;"wrap_content"

android:layout_height&＃61;"wrap_content"/>

android:layout_width&＃61;"fill_parent"

android:layout_height&＃61;"wrap_content"

android:text&＃61;"相册" />

android:layout_height&＃61;"wrap_content"

android:layout_width&＃61;"fill_parent"

android:text&＃61;"拍照" />

二、核心代码&＃xff1a;

package com.ljq.test;

import java.io.ByteArrayOutputStream;

import java.io.File;

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.view.View;

import android.widget.Button;

import android.widget.ImageView;

public class TestActivity extends Activity {

private static final int NONE &＃61; 0;

private static final int PHOTO_GRAPH &＃61; 1;// 拍照

private static final int PHOTO_ZOOM &＃61; 2; // 缩放

private static final int PHOTO_RESOULT &＃61; 3;// 结果

private static final String IMAGE_UNSPECIFIED &＃61; "image/*";

private ImageView imageView &＃61; null;

private Button btnPhone &＃61; null;

private Button btnTakePicture &＃61; null;

&＃64;Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

imageView &＃61; (ImageView) findViewById(R.id.imageView);

btnPhone &＃61; (Button) findViewById(R.id.btnPhone);

btnPhone.setOnClickListener(onClickListener);

btnTakePicture &＃61; (Button) findViewById(R.id.btnTakePicture);

btnTakePicture.setOnClickListener(onClickListener);

}

private final View.OnClickListener onClickListener &＃61; new View.OnClickListener() {

&＃64;Override

public void onClick(View v) {

if(v&＃61;&＃61;btnPhone){ //从相册获取图片

Intent intent &＃61; new Intent(Intent.ACTION_PICK, null);

intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_UNSPECIFIED);

startActivityForResult(intent, PHOTO_ZOOM);

}else if(v&＃61;&＃61;btnTakePicture){ //从拍照获取图片

Intent intent &＃61; new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(Environment

.getExternalStorageDirectory(),"temp.jpg")));

startActivityForResult(intent, PHOTO_GRAPH);

}

}

};

&＃64;Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode &＃61;&＃61; NONE)

return;

// 拍照

if (requestCode &＃61;&＃61; PHOTO_GRAPH) {

// 设置文件保存路径

File picture &＃61; new File(Environment.getExternalStorageDirectory()

&＃43; "/temp.jpg");

startPhotoZoom(Uri.fromFile(picture));

}

if (data &＃61;&＃61; null)

return;

// 读取相册缩放图片

if (requestCode &＃61;&＃61; PHOTO_ZOOM) {

startPhotoZoom(data.getData());

}

// 处理结果

if (requestCode &＃61;&＃61; PHOTO_RESOULT) {

Bundle extras &＃61; data.getExtras();

if (extras !&＃61; null) {

Bitmap photo &＃61; extras.getParcelable("data");

ByteArrayOutputStream stream &＃61; new ByteArrayOutputStream();

photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0-100)压缩文件

//此处可以把Bitmap保存到sd卡中

imageView.setImageBitmap(photo); //把图片显示在ImageView控件上

}

}

super.onActivityResult(requestCode, resultCode, data);

}

/**

* 收缩图片

*

* &＃64;param uri

*/

public void startPhotoZoom(Uri uri) {

Intent intent &＃61; new Intent("com.android.camera.action.CROP");

intent.setDataAndType(uri, IMAGE_UNSPECIFIED);

intent.putExtra("crop", "true");

// aspectX aspectY 是宽高的比例

intent.putExtra("aspectX", 1);

intent.putExtra("aspectY", 1);

// outputX outputY 是裁剪图片宽高

intent.putExtra("outputX", 300);

intent.putExtra("outputY", 500);

intent.putExtra("return-data", true);

startActivityForResult(intent, PHOTO_RESOULT);

}

}

希望本文所述对大家的Android程序设计有所帮助。