不能使用Android開發者教程

Question

我嘗試使用下面的教程Taking Photos Simply

我希望我不會得到太多的downvotes拍照，但我試圖讓從昨天開始（初學者）本教程中取得成功，所以我希望你能幫助我解決：

This is my current code: 
import android.content.Intent; 
import android.graphics.Bitmap; 
import android.net.Uri; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.support.v4.content.FileProvider; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.View; 
import android.widget.Button; 
import android.widget.ImageView; 
import java.io.File; 
import java.io.IOException; 
import java.text.SimpleDateFormat; 
import java.util.Date; 

public class MainActivity extends AppCompatActivity { 
    static final int REQUEST_TAKE_PHOTO = 1; 
    String mCurrentPhotoPath; 
    private Bitmap mImageBitmap; 
    private ImageView mImageView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     Button takePhoto = (Button) findViewById(R.id.take_photo); 
    } 
    public boolean onCreateOptionsMenu(Menu menu) { 
     MenuInflater inflater = getMenuInflater(); 
     inflater.inflate(R.menu.main_menu, menu); 
     return true; 
    } 


    public void dispatchTakePictureIntent(View v) { 
     Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     // Ensure that there's a camera activity to handle the intent 
     if (takePictureIntent.resolveActivity(getPackageManager()) != null) { 
      // Create the File where the photo should go 
      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); 
      } 
     } 
    } 


    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 
     mCurrentPhotoPath = image.getAbsolutePath(); 
     return image; 
    } 
} 

和佈局XML的按鍵部分：

<Button 
     android:text="Take Photo" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:layout_marginTop="72dp" 
     android:id="@+id/take_photo" 
     android:onClick="dispatchTakePictureIntent" /> 

然而，當我點擊應用按鈕，它墜毀用下面的logcat：

 FATAL EXCEPTION: main 
     Process: com.test.testapp, PID: 11174 
    java.lang.IllegalStateException: Could not execute method for android:onClick 
    at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) 
     at android.view.View.performClick(View.java:4764) 
     at android.view.View$PerformClick.run(View.java:19844) 
     at android.os.Handler.handleCallback(Handler.java:739) 
     at android.os.Handler.dispatchMessage(Handler.java:95) 
     at android.os.Looper.loop(Looper.java:135) 
     at android.app.ActivityThread.main(ActivityThread.java:5349) 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908) 
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703) 
Caused by: java.lang.reflect.InvocationTargetException 
     at java.lang.reflect.Method.invoke(Native Method) 
     at java.lang.reflect.Method.invoke(Method.java:372) 
     at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
     at android.view.View.performClick(View.java:4764)  
     at android.view.View$PerformClick.run(View.java:19844)  
     at android.os.Handler.handleCallback(Handler.java:739)  
     at android.os.Handler.dispatchMessage(Handler.java:95)  
     at android.os.Looper.loop(Looper.java:135)  
     at android.app.ActivityThread.main(ActivityThread.java:5349)  
     at java.lang.reflect.Method.invoke(Native Method)  
     at java.lang.reflect.Method.invoke(Method.java:372)  
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)  
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)  
Caused by: java.lang.IllegalArgumentException: Failed to find configured root that contains /storage/emulated/0/Android/data/com.test.testapp/files/Pictures/JPEG_20170122_114322_-6447522201.jpg 
     at android.support.v4.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:711) 
     at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:400) 
     at com.test.testapp.MainActivity.dispatchTakePictureIntent(MainActivity.java:55) 
     at java.lang.reflect.Method.invoke(Native Method)  
     at java.lang.reflect.Method.invoke(Method.java:372)  
     at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)  
     at android.view.View.performClick(View.java:4764)  
     at android.view.View$PerformClick.run(View.java:19844)  
     at android.os.Handler.handleCallback(Handler.java:739)  
     at android.os.Handler.dispatchMessage(Handler.java:95)  
     at android.os.Looper.loop(Looper.java:135)  
     at android.app.ActivityThread.main(ActivityThread.java:5349)  
     at java.lang.reflect.Method.invoke(Native Method)  
     at java.lang.reflect.Method.invoke(Method.java:372)  
     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)  
     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)  

感謝

Answer 1

在file_paths.xml文件，而不是您所使用的<external-path>嘗試<external-files-path name="my_images" path="Pictures" />。