如何从调用的意图回去 [英] How to go back from calling intent

问题描述

我通话摄像头拍照。但我不能拍摄照片后，回到我自己原来的活动。什么问题？谢谢你。

 公共无效的addEntry（查看视图）
{
              串EntryName = RegisterName.toString（）;
              Toast.makeText（这一点，EntryName，Toast.LENGTH_LONG）;
              意图addEntryintent =新的意图（MediaStore.ACTION_IM​​AGE_CAPTURE）;
              档案文件=新的文件（getFilesDir（），EntryName）;
              registeryFileUri = Uri.fromFile（文件）;
              addEntryintent.putExtra（MediaStore.EXTRA_OUTPUT，registeryFileUri）;
              startActivityForResult（addEntryintent，TAKE_PICTURE）;

}


@覆盖
保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
      如果（要求code == TAKE_PICTURE）
      {
          如果（数据！= NULL）
          {
         Toast.makeText（这一点，注册成功！，Toast.LENGTH_LONG）;
         ImageView的Registerimage =（ImageView的）findViewById（R.id.RegisterPicture）;
         Registerimage.setImageURI（registeryFileUri）;
         }

    }
  }
 

解决方案

答案

使用 appContext.getExternalCacheDir（）不要忘记提及PERMISSONS。

  @覆盖
        保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
              如果（要求code == TAKE_PICTURE）
              {
                      如果（结果code == Activity.RESULT_OK）
                  {//如果（数据！= NULL）
                    // {
                    Toast.makeText（这一点，注册成功！，Toast.LENGTH_LONG）;
                    ImageView的Registerimage =（ImageView的）findViewById（R.id.RegisterPicture）;
                    Registerimage.setImageURI（registeryFileUri）;
                    //}
                       }
                      其他
                         Toast.makeText（这一点，别录！，Toast.LENGTH_LONG）;
             }
**android.permission.CAMERA**

检查上面的权限是否被指定在您的清单或不

注：这是更好地使用getExternalCacheDir（）比getFilesDir（），如果你仍然没有得到
      图片，然后使用它。不要忘了指定的权限android.permission.WRITE_EXTERNAL_STORAG​​E如果使用getExternalCacheDir（）。
 

I call camera to take a picture. But I cannot go back to my own original activity after taking the picture. What's the problem? Thank you.

    public void addEntry(View view)
{
              String EntryName=RegisterName.toString();
              Toast.makeText(this, EntryName, Toast.LENGTH_LONG);
              Intent addEntryintent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
              File file = new File(getFilesDir(),EntryName);
              registeryFileUri = Uri.fromFile(file);
              addEntryintent.putExtra(MediaStore.EXTRA_OUTPUT, registeryFileUri);
              startActivityForResult(addEntryintent,TAKE_PICTURE);         

}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
      if (requestCode == TAKE_PICTURE) 
      {
          if (data != null)
          {   
         Toast.makeText(this, "Successfully Registered!", Toast.LENGTH_LONG);
         ImageView Registerimage= (ImageView)findViewById(R.id.RegisterPicture);
         Registerimage.setImageURI(registeryFileUri);
         }

    }
  }

解决方案

Answer

Use appContext.getExternalCacheDir() and don't forget to mention permissons.

    @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
              if (requestCode == TAKE_PICTURE) 
              {
                      if(resultCode==Activity.RESULT_OK)
                  { //if (data != null)
                    //{   
                    Toast.makeText(this, "Successfully Registered!", Toast.LENGTH_LONG);
                    ImageView Registerimage= (ImageView)findViewById(R.id.RegisterPicture);
                    Registerimage.setImageURI(registeryFileUri);
                    //}
                       }
                      else
                         Toast.makeText(this, "Not Registered!", Toast.LENGTH_LONG);
             }  
**"android.permission.CAMERA"**     

Check whether the above permission is specified in your manifest or not

Note: It's better to use getExternalCacheDir() than getFilesDir() if you still dont get the 
      image then use that. Dont forgot to specify the permission "android.permission.WRITE_EXTERNAL_STORAGE" if you use the getExternalCacheDir().

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