PROSAGA码农传奇-安卓-无法致力于onActivityresult

0# 部落用户 | 2019-08-31 10-32

1# v-star*위위 | 2019-08-31 10-32

<div class =“post-text”itemprop =“text”>
  
    要使用图像文件路径，您必须执行以下操作
  
  
    的
      1）编写一种方法来创建图像文件
    </强>
  
   <pre>
 <code>
 String currentPhotoPath;
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
 imageFileName, /* prefix */
 ".jpg", /* suffix */
 storageDir /* directory */
);

// Save a file: path for use with ACTION_VIEW intents
  currentPhotoPath = image.getAbsolutePath();
  return image;
}

</code>
 </pre>
  
    的
      2）调用相机意图
    </强>
  
   <pre>
 <code>
 private void showCamera() {
 Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

if (takePictureIntent.resolveActivity(getPackageManager()) != null) {

File photoFile = null;
    try {
        photoFile = createImageFile();
    } catch (IOException ex) {
        // Error occurred while creating the File

}
    // Continue only if the File was successfully created
    if (photoFile != null) {
        Uri photoURI = FileProvider.getUriForFile(this,
                                              "com.example.android.fileprovider",
                                              photoFile);
        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
        startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
    }
  }
}

</code>
 </pre>
  
    的
      3）
    </强>
     现在，您需要配置FileProvider。在应用的清单中，向您的应用添加提供商：
  
   <pre>
 <code>
 <application>
 ...
 <provider
 android:name="android.support.v4.content.FileProvider"
 android:authorities="${applicationId}.fileprovider"
 android:exported="false"
 android:grantUriPermissions="true">
 <meta-data
 android:name="android.support.FILE_PROVIDER_PATHS"
 android:resource="@xml/file_paths"></meta-data>
 </provider>
 ...
</application>

</code>
 </pre>
  
    的
      4）创建资源文件
       <code>
 res/xml/file_paths.xml
 </code>
    </强>
  
   <pre>
 <code>
 <?xml version="1.0" encoding="utf-8"?>
 <paths xmlns:android="http://schemas.android.com/apk/res/android">
 <external-path name="my_images" 
 path="Android/data/com.example.package.name/files/Pictures" />
</paths>

</code>
 </pre>
  
    的
      注意：
    </强>
     确保您更换
     <code>
 com.example.package.name
 </code>
     与您的应用程序的实际包名称。
  
  
    的
      5）获取imageFilePath
    </强>
  
   <pre>
 <code>
 if (requestCode == CAMERA_REQUEST) { 
 Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), currentPhotoPath);
 imageView.setImageBitmap(bitmap); 
 // or you can use Glide to show image
 Glide.with(this).load(currentPhotoPath).into(imageView);
 }

</code>
 </pre>
  
    希望它按预期工作。有关详细信息，您可以看到谷歌
    <a href="https://developer.android.com/training/camera/photobasics.html#TaskPath" rel="nofollow noreferrer">
      官方文件
    </A>
    ！
  
</DIV>

2# 雪浴冰灵 | 2019-08-31 10-32