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Converted the Android client to use a status bar on the bottom of the screen instead of dialogs for a much better, less interrupting user experience.

Browse source 
git-svn-id: https://zxing.googlecode.com/svn/trunk@365 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
dswitkin 2008-04-17 20:09:17 +00:00
parent 989dc395f0
commit cd7c4d21ac
6 changed files with 136 additions and 72 deletions
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48
android-m3/res/layout/main.xml
View file

@ -14,8 +14,52 @@
See the License for the specific language governing permissions and
limitations under the License.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<FrameLayout id="@+id/preview_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00000000">
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#00000000"/>
<!-- FIXME(dswitkin): Temporary hack to force the height to 48 pixels-->
<LinearLayout id="@+id/status_view"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="48px"
android:layout_weight="0"
android:background="#55000000"
android:baselineAligned="false"
android:padding="4px">
<TextView id="@+id/status_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left|center_vertical"
android:layout_weight="1"
android:text="@string/msg_default_status"
android:textColor="#ffffff"/>
<Button id="@+id/status_action_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center|fill_horizontal"
android:visibility="gone"/>
</LinearLayout>
</LinearLayout>
</FrameLayout>

7
android-m3/res/values/ids.xml
View file

@ -15,6 +15,7 @@
limitations under the License.
-->
<resources>
<!-- Messages IDs -->
<item type="id" name="preview"/>
<item type="id" name="decode"/>
<item type="id" name="save"/>
@ -29,4 +30,10 @@
<item type="id" name="decode_failed"/>
<item type="id" name="save_succeeded"/>
<item type="id" name="save_failed"/>
<!-- Objects in the view hierarchy -->
<item type="id" name="preview_view"/>
<item type="id" name="status_action_button"/>
<item type="id" name="status_text_view"/>
<item type="id" name="status_view"/>
</resources>

84
android-m3/src/com/google/zxing/client/android/BarcodeReaderCaptureActivity.java
View file

@ -25,8 +25,12 @@ import android.os.Handler;
import android.os.Message;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
import android.widget.TextView;
import com.google.zxing.Result;
import com.google.zxing.ResultPoint;
import com.google.zxing.client.result.ParsedReaderResult;
@ -44,6 +48,7 @@ public final class BarcodeReaderCaptureActivity extends Activity {
private CameraManager cameraManager;
private CameraSurfaceView surfaceView;
private CameraThread cameraThread;
private String lastResult;
private static final int ABOUT_ID = Menu.FIRST;
private static final int HELP_ID = Menu.FIRST + 1;
@ -59,11 +64,16 @@ public final class BarcodeReaderCaptureActivity extends Activity {
LayoutParams.NO_STATUS_BAR_FLAG));
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.main);
cameraManager = new CameraManager(getApplication());
surfaceView = new CameraSurfaceView(getApplication(), cameraManager);
setContentView(surfaceView);
cameraThread = new CameraThread(this, surfaceView, cameraManager, messageHandler);
cameraThread.start();
surfaceView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
ViewGroup previewView = (ViewGroup) findViewById(R.id.preview_view);
previewView.addView(surfaceView);
cameraThread = null;
// TODO re-enable this when issues with Matrix.setPolyToPoly() are resolved
//GridSampler.setGridSampler(new AndroidGraphicsGridSampler());
@ -80,6 +90,7 @@ public final class BarcodeReaderCaptureActivity extends Activity {
@Override
protected void onResume() {
super.onResume();
resetStatusView();
cameraManager.openDriver();
if (cameraThread == null) {
cameraThread = new CameraThread(this, surfaceView, cameraManager, messageHandler);
@ -154,6 +165,9 @@ public final class BarcodeReaderCaptureActivity extends Activity {
int duration = message.arg1;
handleDecode((Result) message.obj, duration);
break;
case R.id.restart_preview:
restartPreview();
break;
}
}
};
@ -163,33 +177,45 @@ public final class BarcodeReaderCaptureActivity extends Activity {
restart.sendToTarget();
}
// TODO(dswitkin): These deprecated showAlert calls need to be updated.
private void handleDecode(Result rawResult, int duration) {
if (!rawResult.toString().equals(lastResult)) {
lastResult = rawResult.toString();
ResultPoint[] points = rawResult.getResultPoints();
if (points != null && points.length > 0) {
surfaceView.drawResultPoints(points);
}
Context context = getApplication();
TextView textView = (TextView) findViewById(R.id.status_text_view);
ParsedReaderResult readerResult = parseReaderResult(rawResult);
textView.setText(readerResult.getDisplayResult() + " (" + duration + " ms)");
Button actionButton = (Button) findViewById(R.id.status_action_button);
int buttonText = getActionButtonText(readerResult.getType());
if (buttonText != 0) {
actionButton.setVisibility(View.VISIBLE);
actionButton.setText(buttonText);
ResultHandler handler = new ResultHandler(this, readerResult);
if (handler.getIntent() != null) {
// Can be handled by some external app; ask if the user wants to
// proceed first though
Message yesMessage = handler.obtainMessage(R.string.button_yes);
Message noMessage = handler.obtainMessage(R.string.button_no);
String title = context.getString(getDialogTitleID(readerResult.getType())) +
" (" + duration + " ms)";
showAlert(title, readerResult.getDisplayResult(), context.getString(R.string.button_yes),
yesMessage, context.getString(R.string.button_no), noMessage, true, noMessage);
actionButton.setOnClickListener(handler);
actionButton.requestFocus();
} else {
// Just show information to user
Message okMessage = handler.obtainMessage(R.string.button_ok);
String title = context.getString(R.string.title_barcode_detected) +
" (" + duration + " ms)";
showAlert(title, readerResult.getDisplayResult(), context.getString(R.string.button_ok),
okMessage, null, null, true, okMessage);
actionButton.setVisibility(View.GONE);
}
// Show the green finder patterns for one second, then restart the preview
Message message = Message.obtain(messageHandler, R.id.restart_preview);
messageHandler.sendMessageDelayed(message, 1000);
} else {
restartPreview();
}
}
private void resetStatusView() {
TextView textView = (TextView) findViewById(R.id.status_text_view);
textView.setText(R.string.msg_default_status);
Button actionButton = (Button) findViewById(R.id.status_action_button);
actionButton.setVisibility(View.GONE);
lastResult = "";
}
private static ParsedReaderResult parseReaderResult(Result rawResult) {
@ -209,25 +235,27 @@ public final class BarcodeReaderCaptureActivity extends Activity {
return readerResult;
}
private static int getDialogTitleID(ParsedReaderResultType type) {
private static int getActionButtonText(ParsedReaderResultType type) {
int buttonText;
if (type.equals(ParsedReaderResultType.ADDRESSBOOK)) {
return R.string.title_add_contact;
buttonText = R.string.button_add_contact;
} else if (type.equals(ParsedReaderResultType.URI) ||
type.equals(ParsedReaderResultType.BOOKMARK) ||
type.equals(ParsedReaderResultType.URLTO)) {
return R.string.title_open_url;
buttonText = R.string.button_open_browser;
} else if (type.equals(ParsedReaderResultType.EMAIL) ||
type.equals(ParsedReaderResultType.EMAIL_ADDRESS)) {
return R.string.title_compose_email;
buttonText = R.string.button_email;
} else if (type.equals(ParsedReaderResultType.UPC)) {
return R.string.title_lookup_barcode;
buttonText = R.string.button_lookup_product;
} else if (type.equals(ParsedReaderResultType.TEL)) {
return R.string.title_dial;
buttonText = R.string.button_dial;
} else if (type.equals(ParsedReaderResultType.GEO)) {
return R.string.title_view_maps;
buttonText = R.string.button_show_map;
} else {
return R.string.title_barcode_detected;
buttonText = 0;
}
return buttonText;
}
}

6
android-m3/src/com/google/zxing/client/android/CameraManager.java
View file

@ -241,9 +241,13 @@ final class CameraManager {
" nativeResolution " + nativeResolution + " stillMultiplier " + stillMultiplier);
}
/**
* The goal of the preview resolution is to show a little context around the framing rectangle
* which is the actual captured area in still mode.
*/
private void calculatePreviewResolution() {
if (previewResolution == null) {
int previewHeight = (int) (stillResolution.x * stillMultiplier * 1.4f);
int previewHeight = (int) (stillResolution.x * stillMultiplier * 1.8f);
int previewWidth = previewHeight * screenResolution.x / screenResolution.y;
previewWidth = ((previewWidth + 7) >> 3) << 3;
if (previewWidth > cameraResolution.x) previewWidth = cameraResolution.x;

28
android-m3/src/com/google/zxing/client/android/ResultHandler.java
View file

@ -18,33 +18,22 @@ package com.google.zxing.client.android;
import android.content.Intent;
import android.net.ContentURI;
import android.os.Handler;
import android.os.Message;
import android.provider.Contacts;
import android.util.Log;
import com.google.zxing.client.result.AddressBookAUParsedResult;
import com.google.zxing.client.result.AddressBookDoCoMoParsedResult;
import com.google.zxing.client.result.BookmarkDoCoMoParsedResult;
import com.google.zxing.client.result.EmailAddressParsedResult;
import com.google.zxing.client.result.EmailDoCoMoParsedResult;
import com.google.zxing.client.result.GeoParsedResult;
import com.google.zxing.client.result.ParsedReaderResult;
import com.google.zxing.client.result.ParsedReaderResultType;
import com.google.zxing.client.result.TelParsedResult;
import com.google.zxing.client.result.UPCParsedResult;
import com.google.zxing.client.result.URIParsedResult;
import com.google.zxing.client.result.URLTOParsedResult;
import android.view.View;
import android.widget.Button;
import com.google.zxing.client.result.*;
import java.net.URISyntaxException;
/**
* Handles the result of barcode decoding in the context of the Android platform,
* by dispatching the proper intents and so on.
* by dispatching the proper intents to open other activities like GMail, Maps, etc.
*
* @author srowen@google.com (Sean Owen)
* @author dswitkin@google.com (Daniel Switkin)
*/
final class ResultHandler extends Handler {
final class ResultHandler implements Button.OnClickListener {
private static final String TAG = "ResultHandler";
@ -133,15 +122,10 @@ final class ResultHandler extends Handler {
return intent;
}
@Override
public void handleMessage(Message message) {
if (message.what == R.string.button_yes) {
public void onClick(View view) {
if (intent != null) {
captureActivity.startActivity(intent);
}
} else {
captureActivity.restartPreview();
}
}
Intent getIntent() {

17
android-m3/strings.xml.template
View file

@ -16,21 +16,18 @@
-->
<resources>
<string name="app_name">Barcode Reader</string>
<string name="button_no">No</string>
<string name="button_add_contact">Add Contact</string>
<string name="button_dial">Dial</string>
<string name="button_email">Email</string>
<string name="button_lookup_product">Lookup Product</string>
<string name="button_ok">OK</string>
<string name="button_yes">Yes</string>
<string name="button_open_browser">Open Browser</string>
<string name="button_show_map">Show Map</string>
<string name="menu_about">About...</string>
<string name="menu_help">Help...</string>
<string name="msg_about">ZXing Barcode Reader v@VERSION@\nhttp://code.google.com/p/zxing</string>
<string name="msg_help">A: Decode all barcodes\nC: Capture and save a JPEG\nP: Use the preview image for decoding\nQ: Decode only QR Codes\nS: Use a still image for decoding\nT: Toggle debug method tracing\nU: Decode only UPC/1D barcodes</string>
<string name="msg_default_status">Place a barcode inside the viewfinder rectangle to read it.</string>
<string name="title_about">About</string>
<string name="title_add_contact">Add Contact?</string>
<string name="title_barcode_detected">Barcode Detected</string>
<string name="title_compose_email">Compose E-mail?</string>
<string name="title_dial">Dial Number?</string>
<string name="title_error">Error</string>
<string name="title_help">Keyboard Shortcut Help</string>
<string name="title_lookup_barcode">Look Up Barcode Online?</string>
<string name="title_open_url">Open Web Page?</string>
<string name="title_view_maps">View In Google Maps?</string>
</resources>