Java Code Examples for android.support.annotation.Nullable

public X8MainReturnTimeTextView(Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.X8MainReturnTimeTextView, 0, 0);
    this.photoWidth = typedArray.getDimension(R.styleable.X8MainReturnTimeTextView_width, 0.0f);
    this.fontSize = typedArray.getDimension(R.styleable.X8MainReturnTimeTextView_fontSize, 0.0f);
    typedArray.recycle();
    this.mPaint = new Paint();
    this.mPaint.setColor(getResources().getColor(R.color.x8_main_return_time_bg));
    this.mPaint.setStyle(Style.FILL);
    this.mPaint.setAntiAlias(true);
    this.mPaintStrock = new Paint();
    this.mPaintStrock.setColor(getResources().getColor(R.color.black_70));
    this.mPaintStrock.setStrokeWidth(1.0f);
    this.mPaintStrock.setStyle(Style.STROKE);
    this.mPaintStrock.setAntiAlias(true);
    this.mPaint.setAntiAlias(true);
    this.mPaintText = new Paint();
    this.mPaintText.setTextSize(this.fontSize);
    this.mPaintText.setColor(getResources().getColor(R.color.black_70));
    this.mPaintText.setAntiAlias(false);
}
 

private static @Nullable UrlLinkFrame decodeWxxxFrame(ParsableByteArray id3Data, int frameSize)
    throws UnsupportedEncodingException {
  if (frameSize < 1) {
    // Frame is malformed.
    return null;
  }

  int encoding = id3Data.readUnsignedByte();
  String charset = getCharsetName(encoding);

  byte[] data = new byte[frameSize - 1];
  id3Data.readBytes(data, 0, frameSize - 1);

  int descriptionEndIndex = indexOfEos(data, 0, encoding);
  String description = new String(data, 0, descriptionEndIndex, charset);

  int urlStartIndex = descriptionEndIndex + delimiterLength(encoding);
  int urlEndIndex = indexOfZeroByte(data, urlStartIndex);
  String url = decodeStringIfValid(data, urlStartIndex, urlEndIndex, "ISO-8859-1");

  return new UrlLinkFrame("WXXX", description, url);
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_license);

    HeadControlPanel panel = (HeadControlPanel) findViewById(R.id.license_head);
    panel.setBackIconClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });
    panel.setMiddleTitle(getString(R.string.activity__license));

    final WebView licenseText = (WebView) findViewById(R.id.license_text);
    licenseText.loadUrl(NOTICE_HTML);
}
 

private static @Nullable TextInformationFrame parseIndexAndCountAttribute(
    int type, String attributeName, ParsableByteArray data) {
  int atomSize = data.readInt();
  int atomType = data.readInt();
  if (atomType == Atom.TYPE_data && atomSize >= 22) {
    data.skipBytes(10); // version (1), flags (3), empty (4), empty (2)
    int index = data.readUnsignedShort();
    if (index > 0) {
      String value = "" + index;
      int count = data.readUnsignedShort();
      if (count > 0) {
        value += "/" + count;
      }
      return new TextInformationFrame(attributeName, /* description= */ null, value);
    }
  }
  Log.w(TAG, "Failed to parse index/count attribute: " + Atom.getAtomTypeString(type));
  return null;
}
 

/**
 * Provide a display name for a calling room
 *
 * @param context the application context.
 * @param session the room session.
 * @param room    the room.
 * @return the calling room display name.
 */
@Nullable
public static void getCallingRoomDisplayName(Context context,
                                             final MXSession session,
                                             final Room room,
                                             final ApiCallback<String> callback) {
    if ((null == context) || (null == session) || (null == room)) {
        callback.onSuccess(null);
    } else if (room.getNumberOfJoinedMembers() == 2) {
        room.getJoinedMembersAsync(new SimpleApiCallback<List<RoomMember>>(callback) {
            @Override
            public void onSuccess(List<RoomMember> members) {
                if (TextUtils.equals(members.get(0).getUserId(), session.getMyUserId())) {
                    callback.onSuccess(room.getState().getMemberName(members.get(1).getUserId()));
                } else {
                    callback.onSuccess(room.getState().getMemberName(members.get(0).getUserId()));
                }
            }
        });
    } else {
        callback.onSuccess(room.getRoomDisplayName(context));
    }
}
 

/**
 * @param url See {@link #url}.
 * @param initializationSegment See {@link #initializationSegment}.
 * @param title See {@link #title}.
 * @param durationUs See {@link #durationUs}.
 * @param relativeDiscontinuitySequence See {@link #relativeDiscontinuitySequence}.
 * @param relativeStartTimeUs See {@link #relativeStartTimeUs}.
 * @param fullSegmentEncryptionKeyUri See {@link #fullSegmentEncryptionKeyUri}.
 * @param encryptionIV See {@link #encryptionIV}.
 * @param byterangeOffset See {@link #byterangeOffset}.
 * @param byterangeLength See {@link #byterangeLength}.
 * @param hasGapTag See {@link #hasGapTag}.
 */
public Segment(
    String url,
    @Nullable Segment initializationSegment,
    String title,
    long durationUs,
    int relativeDiscontinuitySequence,
    long relativeStartTimeUs,
    @Nullable String fullSegmentEncryptionKeyUri,
    @Nullable String encryptionIV,
    long byterangeOffset,
    long byterangeLength,
    boolean hasGapTag) {
  this.url = url;
  this.initializationSegment = initializationSegment;
  this.title = title;
  this.durationUs = durationUs;
  this.relativeDiscontinuitySequence = relativeDiscontinuitySequence;
  this.relativeStartTimeUs = relativeStartTimeUs;
  this.fullSegmentEncryptionKeyUri = fullSegmentEncryptionKeyUri;
  this.encryptionIV = encryptionIV;
  this.byterangeOffset = byterangeOffset;
  this.byterangeLength = byterangeLength;
  this.hasGapTag = hasGapTag;
}
 

/**
 * Download file of given url.
 *
 * @param url              the url
 * @param filePath         the file path to save file
 * @param fileName         the file name of downloaded file
 * @param downloadListener the download state callback
 */
@RequiresPermission(allOf = {ACCESS_WIFI_STATE, INTERNET, ACCESS_NETWORK_STATE, WRITE_EXTERNAL_STORAGE})
public void download(@NonNull String url, @NonNull String filePath, @Nullable String fileName, @Nullable DownloadListener downloadListener) {
    this.downloadListener = downloadListener;
    this.url = url;
    this.filePath = filePath;
    if (fileName == null) L.w("The parameter 'fileName' was null, timestamp will be used.");
    this.fileName = fileName == null ? String.valueOf(System.currentTimeMillis()) : fileName;

    if (!NetworkUtils.isConnected()) {
        notifyDownloadError(ERROR_CODE_NETWORK_UNAVAILABLE);
    } else {
        if (onlyWifi) {
            checkWifiAvailable();
        } else {
            doDownload();
        }
    }
}
 

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    videoPlayer = view.findViewById(R.id.video_player);
    VideoPlayerController controller = new VideoPlayerController(getActivity());
    videoPlayer.setUp(url,null);
    videoPlayer.setPlayerType(ConstantKeys.IjkPlayerType.TYPE_IJK);
    videoPlayer.setController(controller);
    ImageUtils.loadImgByPicasso(getActivity(),image,
            R.drawable.image_default,controller.imageView());
    //不从上一次位置播放，也就是每次从0播放
    videoPlayer.continueFromLastPosition(false);
    videoPlayer.postDelayed(new Runnable() {
        @Override
        public void run() {
            videoPlayer.start();
        }
    },50);
}
 

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    unbinder = ButterKnife.bind(this, view);
    contentView.setOnRefreshListener(this);
    recyclerViewKeDou.setLayoutManager(new LinearLayoutManager(getContext()));
    recyclerViewKeDou.setAdapter(keDouAdapter);

    helper = new LoadViewHelper(recyclerViewKeDou);
    helper.setListener(() -> loadData(false));

    keDouAdapter.setOnItemClickListener((adapter, view1, position) -> {
        KeDouModel keDouModel = (KeDouModel) adapter.getItem(position);
        if (keDouModel == null) {
            return;
        }
        Intent intent = new Intent(context, KeDouPlayActivity.class);
        intent.putExtra(Keys.KEY_INTENT_KEDOUWO_ITEM, keDouModel);
        startActivityWithAnimation(intent);
    });
    keDouAdapter.setOnLoadMoreListener(() -> loadData(false), recyclerViewKeDou);
    AppUtils.setColorSchemeColors(context, contentView);
}
 

public static Format createTextSampleFormat(
    @Nullable String id,
    String sampleMimeType,
    @C.SelectionFlags int selectionFlags,
    @Nullable String language,
    @Nullable DrmInitData drmInitData) {
  return createTextSampleFormat(
      id,
      sampleMimeType,
      /* codecs= */ null,
      /* bitrate= */ NO_VALUE,
      selectionFlags,
      language,
      NO_VALUE,
      drmInitData,
      OFFSET_SAMPLE_RELATIVE,
      Collections.emptyList());
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_recyclerview);
    setTitle("RecyclerView示例");
    recyclerView = findViewById(R.id.recyclerView);
    qRefreshLayout = findViewById(R.id.refreshLayout);
    qRefreshLayout.setOnRefreshListener(this);
    qRefreshLayout.setOnLoadListener(this);
    qRefreshLayout.setRefreshing(true);
    qRefreshLayout.setIsCanSecondFloor(true);
    ImageView imageView = new ImageView(this);
    imageView.setImageResource(R.drawable.img_test);
    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
    qRefreshLayout.setSecondFloorView(imageView);

    adapter = new RecyclerAdapter();
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(adapter);
}
 

public void testLoadData4(View view) {
    DataSource<String> dataSource = DataLoader.get(DemoDataSource.class).getData4(COMMON_PARAMS[0]);
    dataSource.result().observe(this, new Observer<String>() {
        @Override
        public void onChanged(@Nullable String s) {
            Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show();
        }
    });
    dataSource.error().observe(this, new Observer<Throwable>() {
        @Override
        public void onChanged(@Nullable Throwable throwable) {
            Toast.makeText(MainActivity.this, throwable.toString(), Toast.LENGTH_SHORT).show();
        }
    });
}
 

@Nullable
@Override
public String firstHeaderValue(String name) {
    for (Pair<String, String> pair : headerList) {
        if (pair.first.equals(name)) {
            return pair.second;
        }
    }
    return null;
}
 

MoveStateOperation(@NonNull Scene scene, @IdRes int viewId, @Nullable String tag, @NonNull State dstState, boolean forceShow, boolean forceHide, boolean forceRemove) {
    super(scene, dstState, forceShow, forceHide, forceRemove);
    if (forceShow && forceHide) {
        throw new IllegalArgumentException("cant forceShow with forceHide");
    }

    this.viewId = viewId;
    this.tag = tag;
    this.dstState = dstState;
}
 

/**
 * Creates event logger.
 *
 * @param trackSelector The mapping track selector used by the player. May be null if detailed
 *     logging of track mapping is not required.
 */
public EventLogger(@Nullable MappingTrackSelector trackSelector) {
  this.trackSelector = trackSelector;
  window = new Timeline.Window();
  period = new Timeline.Period();
  startTimeMs = SystemClock.elapsedRealtime();
}
 

public MyRefreshView(Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
    viewContent = LayoutInflater.from(context).inflate(R.layout.view_my_refresh, null);
    addView(viewContent);
    tvContent = viewContent.findViewById(R.id.tvContent);
    viewContainer = viewContent.findViewById(R.id.viewContainer);
    tvHeight = viewContent.findViewById(R.id.tvHeight);
    progressBar = viewContent.findViewById(R.id.progressBar);
    viewCover = viewContent.findViewById(R.id.viewCover);
    btnReturn = viewContent.findViewById(R.id.btnReturn);
    btnReturn.setOnClickListener(this);
}
 

@Override
public void onViewCreated(@NonNull final View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    TextView tv = view.findViewById(R.id.text);
    tv.setText(getArguments().getString("myarg"));

    Button b = view.findViewById(R.id.send_notification);
    b.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            EditText editArgs = view.findViewById(R.id.edit_args);
            Bundle args = new Bundle();
            args.putString("myarg", editArgs.getText().toString());
            PendingIntent deeplink = Navigation.findNavController(v).createDeepLink()
                    .setDestination(R.id.android)
                    .setArguments(args)
                    .createPendingIntent();
            NotificationManager notificationManager = (NotificationManager)
                    requireContext().getSystemService(Context.NOTIFICATION_SERVICE);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                notificationManager.createNotificationChannel(new NotificationChannel(
                        "deeplink", "Deep Links", NotificationManager.IMPORTANCE_HIGH));
            }
            NotificationCompat.Builder builder = new NotificationCompat.Builder(
                    requireContext(), "deeplink")
                    .setContentTitle("Navigation")
                    .setContentText("Deep link to Android")
                    .setSmallIcon(R.drawable.ic_android)
                    .setContentIntent(deeplink)
                    .setAutoCancel(true);
            notificationManager.notify(0, builder.build());
        }
    });
}
 

private void showAdd(@Nullable String text) {
    final EditText et = new EditText(getContext());
    et.setHint("添加多个请用; 隔开（英文分号加空格）");
    if(text!=null){
        et.setText(text);
    }
    new AlertDialog.Builder(getContext()).setTitle("添加拦截网址或者域名")
            .setView(et)
            .setCancelable(true)
            .setPositiveButton("保存", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int which) {
                    String input = et.getText().toString();
                    if (TextUtils.isEmpty(input)) {
                        ToastMgr.toastShortCenter(getContext(), "网址不能为空");
                    } else {
                        String[] ss = input.split("; ");
                        for (String s : ss) {
                            HostManager.getInstance().addUrl(s);
                        }
                        adapter.notifyDataSetChanged();
                        ToastMgr.toastShortBottomCenter(getContext(), "已成功添加" + ss.length + "条网址");
                    }
                }
            })
            .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialogInterface, int i) {
                    dialogInterface.dismiss();
                }
            })
            .show();
}
 

@Nullable
@Override
public View findSnapView(RecyclerView.LayoutManager layoutManager) {
    if (layoutManager.canScrollVertically()) {
        return findCenterView(layoutManager, getVerticalHelper(layoutManager));
    } else if (layoutManager.canScrollHorizontally()) {
        return findCenterView(layoutManager, getHorizontalHelper(layoutManager));
    }
    return null;
}
 

@Override
public boolean equals(@Nullable Object obj) {
  if (this == obj) {
    return true;
  }
  if (obj == null || getClass() != obj.getClass()) {
    return false;
  }
  DrmInitData other = (DrmInitData) obj;
  return Util.areEqual(schemeType, other.schemeType)
      && Arrays.equals(schemeDatas, other.schemeDatas);
}
 

@Override
public void onLazyInitView(@Nullable Bundle savedInstanceState) {
    super.onLazyInitView(savedInstanceState);
    HttpCreate.getServer().getSystematicDetail(0,mBean.getId())
            .compose(RxUtils.<BaseResponse<PageDataInfo<List<ArticleData>>>>rxScheduers())
            .subscribe(new Observer<BaseResponse<PageDataInfo<List<ArticleData>>>>() {
                @Override
                public void onSubscribe(Disposable d) {

                }

                @Override
                public void onNext(BaseResponse<PageDataInfo<List<ArticleData>>> pageDataInfoBaseResponse) {
                    PageDataInfo<List<ArticleData>> data = pageDataInfoBaseResponse.getData();
                    List<ArticleData> datas = data.getDatas();
                    mAdapter.setNewData(datas);
                }

                @Override
                public void onError(Throwable e) {

                }

                @Override
                public void onComplete() {

                }
            });
}
 

@Override
public boolean equals(@Nullable Object obj) {
  if (this == obj) {
    return true;
  }
  if (obj == null || getClass() != obj.getClass()) {
    return false;
  }
  Parameters other = (Parameters) obj;
  return selectUndeterminedTextLanguage == other.selectUndeterminedTextLanguage
      && disabledTextTrackSelectionFlags == other.disabledTextTrackSelectionFlags
      && forceLowestBitrate == other.forceLowestBitrate
      && allowMixedMimeAdaptiveness == other.allowMixedMimeAdaptiveness
      && allowNonSeamlessAdaptiveness == other.allowNonSeamlessAdaptiveness
      && maxVideoWidth == other.maxVideoWidth
      && maxVideoHeight == other.maxVideoHeight
      && exceedVideoConstraintsIfNecessary == other.exceedVideoConstraintsIfNecessary
      && exceedRendererCapabilitiesIfNecessary == other.exceedRendererCapabilitiesIfNecessary
      && viewportOrientationMayChange == other.viewportOrientationMayChange
      && viewportWidth == other.viewportWidth
      && viewportHeight == other.viewportHeight
      && maxVideoBitrate == other.maxVideoBitrate
      && tunnelingAudioSessionId == other.tunnelingAudioSessionId
      && TextUtils.equals(preferredAudioLanguage, other.preferredAudioLanguage)
      && TextUtils.equals(preferredTextLanguage, other.preferredTextLanguage)
      && areRendererDisabledFlagsEqual(rendererDisabledFlags, other.rendererDisabledFlags)
      && areSelectionOverridesEqual(selectionOverrides, other.selectionOverrides);
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    initView(R.layout.activity_change_city);
    getData();
}
 

/**
 * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
 *     null if delivery of events is not required.
 * @param eventListener A listener of events. May be null if delivery of events is not required.
 * @param audioSink The sink to which audio will be output.
 * @param enableFloatOutput Whether to enable 32-bit float audio format, if supported on the
 *     device/build and if the input format may have bit depth higher than 16-bit. When using
 *     32-bit float output, any audio processing will be disabled, including playback speed/pitch
 *     adjustment.
 */
public FfmpegAudioRenderer(
    @Nullable Handler eventHandler,
    @Nullable AudioRendererEventListener eventListener,
    AudioSink audioSink,
    boolean enableFloatOutput) {
  super(
      eventHandler,
      eventListener,
      /* drmSessionManager= */ null,
      /* playClearSamplesWithoutKeys= */ false,
      audioSink);
  this.enableFloatOutput = enableFloatOutput;
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_video_record);
    mIntent = getIntent();

    mCameraLayout = $(R.id.id_video_gl_view_layout);
    initCameraGlView();

    mVideoView = $(R.id.id_video_view);

    mRecordIv = $(R.id.id_video_record_view);
    mRecordIv.setOnTouchListener(new RecordTouchListener());
    mProgressView = $(R.id.id_record_progress);
    mProgressView.setAutoTimeProgress(GlobalParams.MAX_VIDEO_TIME);
    mProgressView.setProgressListener(this);

    mFlashIv = $(R.id.id_video_flash_iv);
    mFlashIv.setOnClickListener(this);
    mCameraIv = $(R.id.id_video_camera_iv);
    mCameraIv.setOnClickListener(this);

    mCloseIv = $(R.id.id_video_close_iv);
    mCloseIv.setOnClickListener(this);

    mDropIv = $(R.id.id_video_drop_iv);
    mDropIv.setOnClickListener(this);
    mSelectIv = $(R.id.id_video_select_iv);
    mSelectIv.setOnClickListener(this);
    checkPermission();
}
 

@Nullable
public F getFooterAt(int position) {
    int index = toFooterIndex(position);
    if (index < 0 || index >= getFooterSize())
        return null;
    return footers.get(index);
}
 

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //取消ActionBar
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.hide();
    }
    Latte.getConfigurator().withActivity(this);
}
 

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    if (getArguments() != null) {
        isEn = ContentUtil.APP_SETTING_LANG.equals("en") || ContentUtil.APP_SETTING_LANG.equals("sys") && ContentUtil.SYS_LANG.equals("en");
        location = getArguments().getString(PARAM);
        initObserver();
        initView(view);
        initData(location);
    }
}
 

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (this.mSceneContainerLifecycleCallback != null) {
        this.mSceneContainerLifecycleCallback.onActivityCreated(getActivity(), savedInstanceState);
    } else {
        removeSelfWhenNavigationSceneUtilityIsNotInvoked();
    }
}
 

/** @param listener An optional listener. */
public FileDataSource(@Nullable TransferListener listener) {
  super(/* isNetwork= */ false);
  if (listener != null) {
    addTransferListener(listener);
  }
}