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無法將圖像從Android中的圖片庫設置為imageview

[英]Can't set the image to imageview from image gallery in Android

@Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != Activity.RESULT_CANCELED) {
      if (requestCode == PICK_IMAGE) {
        Uri selectedImageUri = data.getData();
        Log.d("PICK_IMAGE", selectedImageUri.toString());
        Dialog settingsDialog = new Dialog(this);
        settingsDialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        settingsDialog.setContentView(getLayoutInflater().inflate(R.layout.custom_dailogue, null));
        img_in_dailogue = (ImageView) findViewById(R.id.img_in_dailogue);
        ImageView img_in_dailogue = new ImageView(this);
        LinearLayout.LayoutParams vp = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
        img_in_dailogue.setLayoutParams(vp);
        img_in_dailogue.setMaxHeight(250);
        img_in_dailogue.setMaxWidth(350);
        img_in_dailogue.setImageURI(Uri.parse(selectedImageUri.toString()));
        settingsDialog.show();
      }
    }
  }

Logcat錯誤

  • java.lang.RuntimeException:無法將結果ResultInfo {who = null,request = 0,result = -1,data = Intent {dat = content:// media / external / images / media / 232 flg = 0x1}}傳遞給活動失敗{com.leadconcept.whopopsup / com.leadconcept.whopopsup.CameraActivity}:java.lang.NullPointerException
  • 在com.leadconcept.whopopsup.CameraActivity.onActivityResult(CameraActivity.java:131)

第二個logcat錯誤將我帶到以下代碼行:

img_in_dailogue.setImageURI(Uri.parse(selectedImageUri.toString()));

該代碼有什么問題? 我不明白為什么無法將imageUri發送到imageview。 我還驗證了我傳遞給setImageURI函數的Uri值正確。

img_in_dailogue = (ImageView) findViewById(R.id.img_in_dailogue);
ImageView img_in_dailogue = new ImageView(this);

在初始化之前,您不是使用img_in_dailogue (它是“對話” btw,而不是dailogue)嗎? 不應該是:

ImageView img_in_dailogue = new ImageView(this);
img_in_dailogue = (ImageView) findViewById(R.id.img_in_dailogue);

HTH。

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