Make sure cancel is handled properly in a few cases, where app must exit after dialog

git-svn-id: https://zxing.googlecode.com/svn/trunk@1466 59b500cc-1b3d-0410-9834-0bbf25fbcc57

android/src/com/google/zxing/client/android/CaptureActivity.java

@@ -723,11 +723,8 @@ public final class CaptureActivity extends Activity implements SurfaceHolder.Cal
     AlertDialog.Builder builder = new AlertDialog.Builder(this);
     builder.setTitle(getString(R.string.app_name));
     builder.setMessage(getString(R.string.msg_camera_framework_bug));
-    builder.setPositiveButton(R.string.button_ok, new DialogInterface.OnClickListener() {
+    builder.setPositiveButton(R.string.button_ok, new FinishListener(this));
-      public void onClick(DialogInterface dialogInterface, int i) {
+    builder.setOnCancelListener(new FinishListener(this));
-        finish();
-      }
-    });
     builder.show();
   }
 

android/src/com/google/zxing/client/android/FinishListener.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2010 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.client.android;
+
+import android.app.Activity;
+import android.content.DialogInterface;
+
+/**
+ * Simple listener used to exit the app in a few cases.
+ *
+ * @author Sean Owen
+ */
+public final class FinishListener implements DialogInterface.OnClickListener, DialogInterface.OnCancelListener {
+
+  private final Activity activityToFinish;
+
+  public FinishListener(Activity activityToFinish) {
+    this.activityToFinish = activityToFinish;
+  }
+
+  public void onCancel(DialogInterface dialogInterface) {
+    activityToFinish.finish();
+  }
+
+  public void onClick(DialogInterface dialogInterface, int i) {
+    activityToFinish.finish();
+  }
+
+}

android/src/com/google/zxing/client/android/encode/EncodeActivity.java

@@ -18,6 +18,7 @@ package com.google.zxing.client.android.encode;
 
 import com.google.zxing.BarcodeFormat;
 import com.google.zxing.WriterException;
+import com.google.zxing.client.android.FinishListener;
 import com.google.zxing.client.android.Intents;
 import com.google.zxing.client.android.R;
 
@@ -83,7 +84,7 @@ public final class EncodeActivity extends Activity {
           setTitle(getString(R.string.app_name) + " - " + qrCodeEncoder.getTitle());
           qrCodeEncoder.requestBarcode(handler, smallerDimension);
           progressDialog = ProgressDialog.show(EncodeActivity.this, null,
-              getString(R.string.msg_encode_in_progress), true, true, cancelListener);
+              getString(R.string.msg_encode_in_progress), true, true, new FinishListener(EncodeActivity.this));
         } catch (IllegalArgumentException e) {
           showErrorMessage(R.string.msg_encode_contents_failed);
         }
@@ -114,18 +115,6 @@ public final class EncodeActivity extends Activity {
     }
   };
 
-  private final OnClickListener clickListener = new OnClickListener() {
-    public void onClick(DialogInterface dialog, int which) {
-      finish();
-    }
-  };
-
-  private final OnCancelListener cancelListener = new OnCancelListener() {
-    public void onCancel(DialogInterface dialog) {
-      finish();
-    }
-  };
-
   @Override
   public void onCreate(Bundle icicle) {
     super.onCreate(icicle);
@@ -233,7 +222,8 @@ public final class EncodeActivity extends Activity {
     }
     AlertDialog.Builder builder = new AlertDialog.Builder(this);
     builder.setMessage(message);
-    builder.setPositiveButton(R.string.button_ok, clickListener);
+    builder.setPositiveButton(R.string.button_ok, new FinishListener(this));
+    builder.setOnCancelListener(new FinishListener(this));
     builder.show();
   }
 }