Question

我四处搜寻并寻找一种检测手表调光的方法。我想写一些代码来在屏幕变暗时更改自定义表面颜色。我怎么能这样做？

Answer 1

我正在使用这个抽象的Activity来检测手表变暗（实现DisplayManager.DisplayListener）。

public abstract class WatchFaceActivity extends Activity implements DisplayManager.DisplayListener {

private DisplayManager displayManager;

public abstract void onScreenDim();
public abstract void onScreenAwake();

public void onWatchFaceRemoved() {
}

public void onScreenOff() {
}


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

    displayManager = (DisplayManager) getSystemService(Context.DISPLAY_SERVICE);
    displayManager.registerDisplayListener(this, null);
}

@Override
protected void onDestroy() {
    super.onDestroy();
    displayManager.unregisterDisplayListener(this);
}

@Override
public void onDisplayRemoved(int displayId) {
    onWatchFaceRemoved();
}

@Override
public void onDisplayAdded(int displayId) {
}

@Override
public void onDisplayChanged(int displayId) {
    switch (displayManager.getDisplay(displayId).getState()) {
        case Display.STATE_DOZING:
            onScreenDim();
            break;
        case Display.STATE_OFF:
            onScreenOff();
            break;
        default:
            onScreenAwake();
            break;
    }
}}

此处有更多信息：http://www.binpress.com/tutorial/how-to-create-a-custom-android-wear-watch-face/120

在Android Watch上检测调光

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