@Override
protected void onResume() {
super.onResume();
// CameraManager必须在这里初始化，而不是在onCreate()中。
// 这是必须的，因为当我们第一次进入时需要显示帮助页，我们并不想打开Camera,测量屏幕大小
// 当扫描框的尺寸不正确时会出现bug
cameraManager = new CameraManager(getApplication());
viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
viewfinderView.setCameraManager(cameraManager);
handler = null;
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
if (hasSurface) {
// activity在paused时但不会stopped,因此surface仍旧存在；
// surfaceCreated()不会调用，因此在这里初始化camera
initCamera(surfaceHolder);
} else {
// 重置callback，等待surfaceCreated()来初始化camera
surfaceHolder.addCallback(this);
}
beepManager.updatePrefs();
inactivityTimer.onResume();
source = IntentSource.NONE;
decodeFormats = null;
characterSet = null;
}
@Override
protected void onResume() {
super.onResume();
// CameraManager must be initialized here, not in onCreate(). This is necessary because we don't
// want to open the camera driver and measure the screen size if we're going to show the help on
// first launch. That led to bugs where the scanning rectangle was the wrong size and partially
// off screen.
cameraManager = new CameraManager(getApplication());
viewfinderView = (ViewfinderView) findViewById(fakeR.getId("id", "viewfinder_view"));
viewfinderView.setCameraManager(cameraManager);
resultView = findViewById(fakeR.getId("id", "result_view"));
statusView = (TextView) findViewById(fakeR.getId("id", "status_view"));
handler = null;
lastResult = null;
resetStatusView();
SurfaceView surfaceView = (SurfaceView) findViewById(fakeR.getId("id", "preview_view"));
SurfaceHolder surfaceHolder = surfaceView.getHolder();
if (hasSurface) {
// The activity was paused but not stopped, so the surface still exists. Therefore
// surfaceCreated() won't be called, so init the camera here.
initCamera(surfaceHolder);
} else {
// Install the callback and wait for surfaceCreated() to init the camera.
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
beepManager.updatePrefs();
inactivityTimer.onResume();
Intent intent = getIntent();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
copyToClipboard =
prefs.getBoolean(PreferencesActivity.KEY_COPY_TO_CLIPBOARD, true)
&& (intent == null || intent.getBooleanExtra(Intents.Scan.SAVE_HISTORY, true));
// source = IntentSource.NONE;
source = IntentSource.NATIVE_APP_INTENT;
decodeFormats = null;
characterSet = null;
if (intent != null) {
String action = intent.getAction();
String dataString = intent.getDataString();
if (Intents.Scan.ACTION.equals(action)) {
// Scan the formats the intent requested, and return the result to the calling activity.
source = IntentSource.NATIVE_APP_INTENT;
decodeFormats = DecodeFormatManager.parseDecodeFormats(intent);
if (intent.hasExtra(Intents.Scan.WIDTH) && intent.hasExtra(Intents.Scan.HEIGHT)) {
int width = intent.getIntExtra(Intents.Scan.WIDTH, 0);
int height = intent.getIntExtra(Intents.Scan.HEIGHT, 0);
if (width > 0 && height > 0) {
cameraManager.setManualFramingRect(width, height);
}
}
String customPromptMessage = intent.getStringExtra(Intents.Scan.PROMPT_MESSAGE);
if (customPromptMessage != null) {
statusView.setText(customPromptMessage);
}
} else if (dataString != null
&& dataString.contains(PRODUCT_SEARCH_URL_PREFIX)
&& dataString.contains(PRODUCT_SEARCH_URL_SUFFIX)) {
// Scan only products and send the result to mobile Product Search.
source = IntentSource.PRODUCT_SEARCH_LINK;
sourceUrl = dataString;
decodeFormats = DecodeFormatManager.PRODUCT_FORMATS;
} else if (isZXingURL(dataString)) {
// Scan formats requested in query string (all formats if none specified).
// If a return URL is specified, send the results there. Otherwise, handle it ourselves.
source = IntentSource.ZXING_LINK;
sourceUrl = dataString;
Uri inputUri = Uri.parse(sourceUrl);
returnUrlTemplate = inputUri.getQueryParameter(RETURN_URL_PARAM);
returnRaw = inputUri.getQueryParameter(RAW_PARAM) != null;
decodeFormats = DecodeFormatManager.parseDecodeFormats(inputUri);
}
characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET);
}
}