android.content.ComponentCallbacks Java Examples

public ColorPickerDialog(Context context, int initialColor) {
super(context);
      context.registerComponentCallbacks(new ComponentCallbacks() {
         @Override
         public void onConfigurationChanged(Configuration newConfig) {
             setUp(mOldColor.getColor(), mNewColor.getColor());
             setAlphaSliderVisible(mAlphaSliderEnabled);
             setHexValueEnabled(mHexValueEnabled);
         }
         @Override
         public void onLowMemory() {
         }
      });

      init(initialColor);
  }
 

private void started() {
     RuntimeVariables.androidApplication.registerActivityLifecycleCallbacks(new ActivityLifeCycleObserver());
     RuntimeVariables.androidApplication.registerComponentCallbacks(new ComponentCallbacks() {
         @Override
         public void onConfigurationChanged(Configuration newConfig) {
             if (RuntimeVariables.delegateResources != null) {
                 RuntimeVariables.delegateResources.updateConfiguration(newConfig, RuntimeVariables.delegateResources.getDisplayMetrics());
             }
         }

         @Override
         public void onLowMemory() {

         }
     });


}
 

@CallSuper
public void onConfigurationChanged(Configuration newConfig) {
    Object[] callbacks = collectComponentCallbacks();
    if (callbacks != null) {
        for (int i=0; i<callbacks.length; i++) {
            ((ComponentCallbacks)callbacks[i]).onConfigurationChanged(newConfig);
        }
    }
}
 

private void registerListener() {
    mAppContext.registerComponentCallbacks(
        new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration configuration) {
                updateNativeSharedDisplayInfo();
            }

            @Override
            public void onLowMemory() {
            }
    });
}
 

private void registerListener() {
    mAppContext.registerComponentCallbacks(
        new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration configuration) {
                updateNativeSharedDisplayInfo();
            }

            @Override
            public void onLowMemory() {
            }
    });
}
 

private void registerListener() {
    ContextUtils.getApplicationContext().registerComponentCallbacks(
            new ComponentCallbacks() {
                @Override
                public void onConfigurationChanged(Configuration configuration) {
                    updateNativeViewConfigurationIfNecessary();
                }

                @Override
                public void onLowMemory() {
                }
            });
}
 

/**
 * Starts a new session for logging.
 * @param tabModelSelector A TabModelSelector instance for recording tab counts on page loads.
 * If null, UmaSessionStats does not record page loads and tab counts.
 */
public void startNewSession(TabModelSelector tabModelSelector) {
    ensureNativeInitialized();

    mTabModelSelector = tabModelSelector;
    if (mTabModelSelector != null) {
        mComponentCallbacks = new ComponentCallbacks() {
            @Override
            public void onLowMemory() {
                // Not required
            }

            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                mKeyboardConnected = newConfig.keyboard != Configuration.KEYBOARD_NOKEYS;
            }
        };
        mContext.registerComponentCallbacks(mComponentCallbacks);
        mKeyboardConnected = mContext.getResources().getConfiguration()
                .keyboard != Configuration.KEYBOARD_NOKEYS;
        mTabModelSelectorTabObserver = new TabModelSelectorTabObserver(mTabModelSelector) {
            @Override
            public void onPageLoadFinished(Tab tab) {
                recordPageLoadStats(tab);
            }
        };
    }

    nativeUmaResumeSession(sNativeUmaSessionStats);
    updatePreferences();
    updateMetricsServiceState();
    DefaultBrowserInfo.logDefaultBrowserStats();
}
 

/**
 * Starts a new session for logging.
 * @param tabModelSelector A TabModelSelector instance for recording tab counts on page loads.
 * If null, UmaSessionStats does not record page loads and tab counts.
 */
public void startNewSession(TabModelSelector tabModelSelector) {
    ensureNativeInitialized();

    mTabModelSelector = tabModelSelector;
    if (mTabModelSelector != null) {
        mComponentCallbacks = new ComponentCallbacks() {
            @Override
            public void onLowMemory() {
                // Not required
            }

            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                mKeyboardConnected = newConfig.keyboard != Configuration.KEYBOARD_NOKEYS;
            }
        };
        mContext.registerComponentCallbacks(mComponentCallbacks);
        mKeyboardConnected = mContext.getResources().getConfiguration()
                .keyboard != Configuration.KEYBOARD_NOKEYS;
        mTabModelSelectorTabObserver = new TabModelSelectorTabObserver(mTabModelSelector) {
            @Override
            public void onPageLoadFinished(Tab tab) {
                recordPageLoadStats(tab);
            }
        };
    }

    nativeUmaResumeSession(sNativeUmaSessionStats);
    updatePreferences();
    updateMetricsServiceState();
}
 

/**
 * Starts a new session for logging.
 * @param tabModelSelector A TabModelSelector instance for recording tab counts on page loads.
 * If null, UmaSessionStats does not record page loads and tab counts.
 */
public void startNewSession(TabModelSelector tabModelSelector) {
    ensureNativeInitialized();

    mTabModelSelector = tabModelSelector;
    if (mTabModelSelector != null) {
        mComponentCallbacks = new ComponentCallbacks() {
            @Override
            public void onLowMemory() {
                // Not required
            }

            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                mKeyboardConnected = newConfig.keyboard != Configuration.KEYBOARD_NOKEYS;
            }
        };
        mContext.registerComponentCallbacks(mComponentCallbacks);
        mKeyboardConnected = mContext.getResources().getConfiguration()
                .keyboard != Configuration.KEYBOARD_NOKEYS;
        mTabModelSelectorTabObserver = new TabModelSelectorTabObserver(mTabModelSelector) {
            @Override
            public void onPageLoadFinished(Tab tab) {
                recordPageLoadStats(tab);
            }
        };
    }

    nativeUmaResumeSession(sNativeUmaSessionStats);
    NetworkChangeNotifier.addConnectionTypeObserver(this);
    updatePreferences();
    updateMetricsServiceState();
}
 

public static void setCustomDensity(@NonNull AppCompatActivity activity, @NonNull final Application application) {
    final DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics();

    if (sNonCompatDensity == 0) {
        sNonCompatDensity = appDisplayMetrics.density;
        sNonCompatScaledDensity = appDisplayMetrics.scaledDensity;
        application.registerComponentCallbacks(new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                if (newConfig != null && newConfig.fontScale > 0) {
                    sNonCompatScaledDensity = application.getResources().getDisplayMetrics().scaledDensity;
                }
            }

            @Override
            public void onLowMemory() {

            }
        });
    }

    final float targetDensity;
    Configuration configuration = activity.getResources().getConfiguration(); //获取设置的配置信息
    if (configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
        targetDensity = appDisplayMetrics.widthPixels / 360f;
    } else {
        targetDensity = appDisplayMetrics.heightPixels / 640f;
    }
    final float targetScaledDensity = targetDensity * (sNonCompatScaledDensity / sNonCompatDensity);
    final int targetDensityDpi = (int) (160 * targetDensity);

    appDisplayMetrics.density = targetDensity;
    appDisplayMetrics.scaledDensity = targetScaledDensity;
    appDisplayMetrics.densityDpi = targetDensityDpi;

    final DisplayMetrics activityDisplayMetrics = activity.getResources().getDisplayMetrics();
    activityDisplayMetrics.density = targetDensity;
    activityDisplayMetrics.scaledDensity = targetScaledDensity;
    activityDisplayMetrics.densityDpi = targetDensityDpi;
}
 

public static void setCustomDensity(@NonNull Activity activity, @NonNull final Application application) {
    DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics();
    if (sNoncompatDensity == 0) {
        sNoncompatDensity = appDisplayMetrics.density;
        sNoncompatScaledDensity = appDisplayMetrics.scaledDensity;
        // 防止系统切换后不起作用
        application.registerComponentCallbacks(new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                if (newConfig != null && newConfig.fontScale > 0) {
                    sNoncompatScaledDensity = application.getResources().getDisplayMetrics().scaledDensity;
                }
            }

            @Override
            public void onLowMemory() {

            }
        });
    }
    float targetDensity = appDisplayMetrics.widthPixels / 360;
    // 防止字体变小
    float targetScaleDensity = targetDensity * (sNoncompatScaledDensity / sNoncompatDensity);
    int targetDensityDpi = (int) (160 * targetDensity);

    appDisplayMetrics.density = targetDensity;
    appDisplayMetrics.scaledDensity = targetScaleDensity;
    appDisplayMetrics.densityDpi = targetDensityDpi;

    final DisplayMetrics activityDisplayMetrics = activity.getResources().getDisplayMetrics();
    activityDisplayMetrics.density = targetDensity;
    activityDisplayMetrics.scaledDensity = targetScaleDensity;
    activityDisplayMetrics.densityDpi = targetDensityDpi;
}
 

@CallSuper
public void onLowMemory() {
    Object[] callbacks = collectComponentCallbacks();
    if (callbacks != null) {
        for (int i=0; i<callbacks.length; i++) {
            ((ComponentCallbacks)callbacks[i]).onLowMemory();
        }
    }
}
 

/**
 * 设计稿的宽度，以dp为单位，后面需要以f（浮点型）比如375f
 * @param application
 * @param width
 */
public static void setDensity(@NonNull final Application application, float width) {
    appDisplayMetrics = application.getResources().getDisplayMetrics();
    WIDTH = width;
    registerActivityLifecycleCallbacks(application);

    if (appDensity == 0) {
        //初始化的时候赋值
        appDensity = appDisplayMetrics.density;
        appScaledDensity = appDisplayMetrics.scaledDensity;

        //添加字体变化的监听
        application.registerComponentCallbacks(new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                //字体改变后,将appScaledDensity重新赋值
                if (newConfig != null && newConfig.fontScale > 0) {
                    appScaledDensity = application.getResources().getDisplayMetrics().scaledDensity;
                }
            }

            @Override
            public void onLowMemory() {
            }
        });
    }
}
 

public static void setDensity(@NonNull Application application) {
    //获取application的DisplayMetrics
    //DisplayMetrics 类提供了一种关于显示的通用信息，如显示大小，分辨率和字体。
    appDisplayMetrics = application.getResources().getDisplayMetrics();
    //获取状态栏高度
    barHeight = StatusBarUtils.getStatusBarHeight(application);

    if (appDensity == 0) {
        //初始化的时候赋值
        appDensity = appDisplayMetrics.density;
        appScaledDensity = appDisplayMetrics.scaledDensity;

        //添加字体变化的监听
        application.registerComponentCallbacks(new ComponentCallbacks() {
            @Override
            public void onConfigurationChanged(Configuration newConfig) {
                //字体改变后,将appScaledDensity重新赋值
                if (newConfig != null && newConfig.fontScale > 0) {
                    appScaledDensity = BaseApplication.getInstance().getResources()
                            .getDisplayMetrics().scaledDensity;
                }
            }

            @Override
            public void onLowMemory() {

            }
        });
    }
}
 

@Override
public void registerComponentCallbacks(ComponentCallbacks callback) {
  if (callback instanceof ComponentCallbacks2) {
    componentCallbacks.add((ComponentCallbacks2) callback);
  }
}
 

@TargetApi(VERSION_CODES.ICE_CREAM_SANDWICH)
private static void unregisterComponentCallbacks(final Application app, final ComponentCallbacks callbacks) {
	if (app == null || VERSION.SDK_INT < VERSION_CODES.ICE_CREAM_SANDWICH) return;
	app.unregisterComponentCallbacks(callbacks);
}
 

@TargetApi(VERSION_CODES.ICE_CREAM_SANDWICH)
private static void registerComponentCallbacks(final Application app, final ComponentCallbacks callbacks) {
	if (VERSION.SDK_INT < VERSION_CODES.ICE_CREAM_SANDWICH) return;
	app.registerComponentCallbacks(callbacks);
}
 

public void registerComponentCallbacks(ComponentCallbacks callback) {
    synchronized (mComponentCallbacks) {
        mComponentCallbacks.add(callback);
    }
}
 

public void unregisterComponentCallbacks(ComponentCallbacks callback) {
    synchronized (mComponentCallbacks) {
        mComponentCallbacks.remove(callback);
    }
}
 

/**
 * Remove a {@link ComponentCallbacks} object that was previously registered
 * with {@link #registerComponentCallbacks(ComponentCallbacks)}.
 */
@Override
public void unregisterComponentCallbacks(ComponentCallbacks callback) {
    super.unregisterComponentCallbacks(callback);
}
 

@Override
public void unregisterComponentCallbacks(ComponentCallbacks callback) {
  if (callback instanceof ComponentCallbacks2) {
    componentCallbacks.remove(callback);
  }
}
 

@Override
public void unregisterComponentCallbacks(ComponentCallbacks callback) {
    app.unregisterComponentCallbacks(callback);
}
 

@TargetApi(14)
public static void registerComponentCallbacks(ComponentCallbacks callback) {
    Base.getContext().registerComponentCallbacks(callback);
}
 

@Override public void unregisterComponentCallbacks(final ComponentCallbacks callback) {
	if (SDK_INT >= ICE_CREAM_SANDWICH) mApplication.unregisterComponentCallbacks(callback);
}
 

@Override
public void registerComponentCallbacks(ComponentCallbacks callback) {
    app.registerComponentCallbacks(callback);
}
 

@Override
public void registerComponentCallbacks(ComponentCallbacks callback) {
    app.registerComponentCallbacks(callback);
}
 

@Override
public void unregisterComponentCallbacks(ComponentCallbacks callback) {
    app.unregisterComponentCallbacks(callback);
}
 

@Override public void registerComponentCallbacks(final ComponentCallbacks callback) {
	if (SDK_INT >= ICE_CREAM_SANDWICH) mApplication.registerComponentCallbacks(callback);
}
 

@Override public void unregisterComponentCallbacks(final ComponentCallbacks callback) {
	if (SDK_INT >= ICE_CREAM_SANDWICH) mApplication.unregisterComponentCallbacks(callback);
}
 

@Override
public void registerComponentCallbacks(ComponentCallbacks callback) {
    Log.d(TAG, "registerComponentCallbacks");
    super.registerComponentCallbacks(callback);
}