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如何拍照，保存并在Android中获取照片

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【如何拍照，保存并在Android中获取照片】满堂花醉三千客，一剑霜寒十四州。这篇文章主要讲述如何拍照，保存并在Android中获取照片相关的知识，希望能为你提供帮助。
我一直在搜索一个简单的例子拍照，并使用URI保存它并检索照片进行图像处理，我尝试了很多示例代码，但没有一个顺利进行。
有没有人有示例代码？
答案定义一个像这样的变量

protected static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 0;

使用代码从android调用相机。
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),"fname_" + String.valueOf(System.currentTimeMillis()) + ".jpg")); intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageUri); startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);

并在调用它的类中覆盖onActivityResult函数并输入以下代码。
protected void onActivityResult(int requestCode, int resultCode, Intent data) {if (resultCode == RESULT_OK) { if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {//use imageUri here to access the imageBundle extras = data.getExtras(); Log.e("URI",imageUri.toString()); Bitmap bmp = (Bitmap) extras.get("data"); // here you will get the image as bitmap} else if (resultCode == RESULT_CANCELED) { Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT); } }}

另一答案有几个示例捕获图像并存储并打开它...
1. Android Camera API - Tutorial
2. Android Developers
3. Camera Example on Github
4. Another Example
另一答案我有同样的问题。
我正在测试一些来自互联网的代码，但找不到任何代码。然后，我研究了developer.android的一些基本代码。在那之后，我混合了两个不同的代码，我的一个工作！在这里！
public class MainActivity extends AppCompatActivity {static final int PICTURE_RESULT = 1; String mCurrentPhotoPath; ContentValues values; private Uri file; ImageView imageView; Bitmap help1; ThumbnailUtils thumbnail; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); imageView = (ImageView) findViewById(R.id.imageView); values = new ContentValues(); }public void launch_camera(View v) { // the intent is my camera Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); //getting uri of the file file = Uri.fromFile(getFile()); //Setting the file Uri to my photo intent.putExtra(MediaStore.EXTRA_OUTPUT,file); if(intent.resolveActivity(getPackageManager())!=null) { startActivityForResult(intent, PICTURE_RESULT); } }//this method will create and return the path to the image file private File getFile() { File folder = Environment.getExternalStoragePublicDirectory("/From_camera/imagens"); // the file path//if it doesn't exist the folder will be created if(!folder.exists()) {folder.mkdir(); }String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date()); String imageFileName = "JPEG_"+ timeStamp + "_"; File image_file = null; try { image_file = File.createTempFile(imageFileName,".jpg",folder); } catch (IOException e) { e.printStackTrace(); }mCurrentPhotoPath = image_file.getAbsolutePath(); return image_file; }@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(requestCode == PICTURE_RESULT) { if(resultCode == Activity.RESULT_OK) { try { help1 = MediaStore.Images.Media.getBitmap(getContentResolver(),file); imageView.setImageBitmap( thumbnail.extractThumbnail(help1,help1.getWidth(),help1.getHeight())); }catch (Exception e){ e.printStackTrace(); } } } } }

XML文件只有一个Button和一个ImageView，不要忘记在你的android清单中声明权限：
< uses-feature android:name="android.hardware.camera"android:required="true" /> < uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

更多信息建议：https://developer.android.com/training/camera/photobasics.html#TaskPhotoView https://www.youtube.com/watch?v=je9bdkdNQqg
另一答案请使用以下代码。
package com.example.stackoverflow; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.math.BigInteger; import java.security.SecureRandom; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; 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.GridView; import android.widget.ImageView; public class MyCameraActivity extends Activity { private static final int CAMERA_REQUEST = 1888; static String str_Camera_Photo_ImagePath = ""; private static File f; private static int Take_Photo = 2; private static String str_randomnumber = ""; static String str_Camera_Photo_ImageName = ""; public static String str_SaveFolderName; private static File wallpaperDirectory; Bitmap bitmap; int storeposition = 0; public static GridView gridview; public static ImageView imageView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.ccccc); this.imageView = (ImageView)this.findViewById(R.id.imageView1); Button photoButton = (Button) this.findViewById(R.id.button1); photoButton.setOnClickListener(new View.OnClickListener() {@Override public void onClick(View v) { str_SaveFolderName = Environment .getExternalStorageDirectory() .getAbsolutePath() + "/rajeshsample"; str_randomnumber = String.valueOf(nextSessionId()); wallpaperDirectory = new File(str_SaveFolderName); if (!wallpaperDirectory.exists()) wallpaperDirectory.mkdirs(); str_Camera_Photo_ImageName = str_randomnumber + ".jpg"; str_Camera_Photo_ImagePath = str_SaveFolderName + "/" + str_randomnumber + ".jpg"; System.err.println(" str_Camera_Photo_ImagePath" + str_Camera_Photo_ImagePath); f = new File(str_Camera_Photo_ImagePath); startActivityForResult(new Intent( MediaStore.ACTION_IMAGE_CAPTURE).putExtra( MediaStore.EXTRA_OUTPUT, Uri.fromFile(f)), Take_Photo); System.err.println("f" + f); } }); }// used to create randon numbers public String nextSessionId() { SecureRandom random = new SecureRandom(); return new BigInteger(130, random).toString(32); }protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == Take_Photo) { Stri

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