Imageview中的模糊圖像問題

Question

我已經通過Intent實現了Camera並在Imageview中設置該圖像顯得模糊，而在ImageGallery中相同的圖像顯示清晰。該代碼和相關圖片如下：

Image saved in SD CARD

Blurred image in Imageview

活動課：

public class MainActivity extends ActionBarActivity { 
    Button b1,b2; 
    ImageView iv; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     b1=(Button)findViewById(R.id.button); 
     iv=(ImageView)findViewById(R.id.imageView); 

     b1.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
      startActivityForResult(intent, 0); 
     } 
     }); 
    } 

    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     // TODO Auto-generated method stub 
     super.onActivityResult(requestCode, resultCode, data); 

     Bitmap bp = (Bitmap) data.getExtras().get("data"); 
     iv.setImageBitmap(bp); 
    } 

文件被保存在SD卡，也是我retrive其URI成功地，但仍ImageView的當相機點擊並返回時，不顯示此圖像或imageview消失。代碼如下 - ：

public class MainActivity extends Activity { 

    static int TAKE_PIC =1; 
    Uri outPutfileUri; 
    ImageView mImageView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     mImageView = (ImageView) findViewById(R.id.image); 
    } 


    public void CameraClick(View v) { 

     Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     File file = new File(Environment.getExternalStorageDirectory(), 
       "MyPhoto.jpg"); 
     outPutfileUri = Uri.fromFile(file); 
     intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri); 
     startActivityForResult(intent, TAKE_PIC); 
    } 

    Bitmap bitmap = null; 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode,Intent data) 
    { 
     if (requestCode == TAKE_PIC && resultCode==RESULT_OK) { 

      String uri = outPutfileUri.toString(); 
      Log.e("uri-:", uri); 
      mImageView.setImageURI(Uri.parse(uri)); 
     } 
}} 

請告訴我如何獲取點擊圖像的路徑，並將其設置爲imageview。我剛來這地方。

Answer 1

試試這個，

public class MainActivity extends Activity { 

    static int TAKE_PIC =1; 
    Uri outPutfileUri; 
    ImageView mImageView; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     mImageView = (ImageView) findViewById(R.id.image); 
    } 


    public void CameraClick(View v) { 

     Intent intent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     File file = new File(Environment.getExternalStorageDirectory(), 
       "MyPhoto.jpg"); 
     outPutfileUri = Uri.fromFile(file); 
     intent.putExtra(MediaStore.EXTRA_OUTPUT, outPutfileUri); 
     startActivityForResult(intent, TAKE_PIC); 
    } 

    Bitmap bitmap = null; 

    @Override 
    protected void onActivityResult(int requestCode, int resultCode,Intent data) 
    { 
     if (requestCode == TAKE_PIC && resultCode==RESULT_OK) { 

      String uri = outPutfileUri.toString(); 
      Log.e("uri-:", uri); 
      Toast.makeText(this, outPutfileUri.toString(),Toast.LENGTH_LONG).show(); 

      //Bitmap myBitmap = BitmapFactory.decodeFile(uri); 
      // mImageView.setImageURI(Uri.parse(uri)); OR drawable make image strechable so try bleow also 

      try { 
       bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), outPutfileUri); 
       Drawable d = new BitmapDrawable(getResources(), bitmap); 
       mImageView.setImageDrawable(d); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 


     } 
} 

} 

希望這會幫助你享受!!!!!

Answer 2

首先，由於意圖數據僅包含圖像的縮略圖，因此圖像模糊不清。

您必須將圖像保存在內部/外部存儲器上，然後獲取它。

隨意看看有關相機的圖像的Android開發者文檔：

Android Developers

和這位前輩SO回答解釋瞭如何保存它後檢索完整大小的圖片：

Android get full size image from camera