結果不能交付

這個應用程序測試使用內置攝像頭在Android？什麼是我的代碼中的錯誤，導致此錯誤結果不能交付

我開始相機和拍攝照片的話，我想在ImageView的

，以顯示它，我發現，儲存在SD卡上的照片，但在onActivityResult不能使用它方法

package com.world.hello; 

import java.io.File; 

import android.app.Activity; 
import android.content.Intent; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.os.Bundle; 
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; 

public class Main extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     Button btn = (Button) findViewById(R.id.button1); 
     btn.setOnClickListener(new OnClickListener() { 

      public void onClick(View v) { 
       Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
       intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
         "/sdcard/Pictures/MyCameraApp/IMAG.jpg"))); 
       startActivityForResult(intent, 100); 
      } 
     }); 
    } 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if (resultCode == RESULT_OK) { 
      if (requestCode == 100) { 
       Log.d("Image", data.getData().toString()); 
//    ImageView iv = (ImageView) findViewById(R.id.imageView1); 
//    iv.setImageBitmap(BitmapFactory.decodeFile(data.getData().toString())); 
      } 
     } 
    } 
}

爲什麼這個錯誤？

05-24 17:19:40.164: E/AndroidRuntime(4759): FATAL EXCEPTION: main 
05-24 17:19:40.164: E/AndroidRuntime(4759): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=100, result=-1, data=null} to activity {com.world.hello/com.world.hello.Main}: java.lang.NullPointerException 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread.deliverResults(ActivityThread.java:2980) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread.handleSendResult(ActivityThread.java:3023) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread.access$1100(ActivityThread.java:123) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1177) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.os.Handler.dispatchMessage(Handler.java:99) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.os.Looper.loop(Looper.java:137) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread.main(ActivityThread.java:4424) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at java.lang.reflect.Method.invoke(Method.java:511) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at dalvik.system.NativeStart.main(Native Method) 
05-24 17:19:40.164: E/AndroidRuntime(4759): Caused by: java.lang.NullPointerException 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at com.world.hello.Main.onActivityResult(Main.java:40) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.Activity.dispatchActivityResult(Activity.java:4649) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  at android.app.ActivityThread.deliverResults(ActivityThread.java:2976) 
05-24 17:19:40.164: E/AndroidRuntime(4759):  ... 11 more

來源

2012-05-24 M_E

您的父文件夾是否已經存在？ –

是拍攝的照片已存儲在文件中 –

 
Log.d("Image", data.getData().toString());

你並不需要獲得的數據即可。您已經知道圖像保存到的文件的位置。直接使用。

來源

2012-05-24 16:07:21

結果不能交付

回答

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