Android将上下文传递给onclicklistener

Question

任何人都可以告诉我如何正确地将我的应用程序上下文传递给我的按钮setOnClickListener？

当我点击使用Zxing在我的布局代码中定义的"扫描按钮"时,我正在尝试扫描条形码.

以下是我的代码:

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

    final Button scan = (Button)findViewById(R.id.scanButton);
        scan.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                Context c = getApplicationContext();

                // TODO Auto-generated method stub
                IntentIntegrator integrator = new IntentIntegrator(c);
                integrator.initiateScan();
            }
        });

    }//close onCreate
        public void onActivityResult(int requestCode, int resultCode, Intent intent) {
          IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent);
          if (scanResult != null) {
            // handle scan result
            Log.e("DATA", "TESTING SCAN RESULT : " + scanResult.toString());
          }else{
              Log.d("DATA", "NO SCAN RESULTS : ");// + scanResult.getFormatName());//scanResult.getContents());
          }

        }
}//close ScaningActivity

问题是IntentIntegrator无法识别我提供的上下文参数,如下所示:

Context c = getApplicationContext();
IntentIntegrator integrator = new IntentIntegrator(c);

Answer 1

尝试更换

Context c = getApplicationContext();

通过

Context c = ScaningActivity.this;