如何在Android上检测辅助功能设置已启用/禁用

问题描述：

我对高对比度文本，色彩校正和放大率设置特别感兴趣.我在网上做了一些研究，找不到我想要的东西.我看到了一个有关检测高对比度文本的答案:

I'm particularly interested in high contrast text, color correction, and magnification settings. I did some research online, couldn't find what I want. I saw one answer about detecting high contrast text:

AccessibilityManager am = (AccessibilityManager) this.getSystemService(Context.ACCESSIBILITY_SERVICE);
boolean isHighTextContrastEnabled = am.isHighTextContrastEnabled();

但是不知何故，它给我 isHighTextContrastEnabled()错误，说它对于AccessibilityManager类型是未定义的.

But somehow it gives me the error for isHighTextContrastEnabled() saying that it is undefined for the type AccessibilityManager.

也没有找到其他两个设置检测的解决方案.

Also didn't find solution for the other two settings detection.

答

    AccessibilityManager am = (AccessibilityManager) this.getSystemService(Context.ACCESSIBILITY_SERVICE);

    Class clazz = am.getClass();
    Method m = null;
    try {
        m = clazz.getMethod("isHighTextContrastEnabled",null);
    } catch (NoSuchMethodException e) {
        Log.w("FAIL", "isHighTextContrastEnabled not found in AccessibilityManager");
    }


    Object result = null;
    try {
        result = m.invoke(am, null);
        if (result != null && result instanceof Boolean)  {
            Boolean b = (Boolean)result;
            Log.d("result", "b =" + b);
        }
    }  catch (Exception e) {
        android.util.Log.d("fail",  "isHighTextContrastEnabled invoked with an exception" + e.getMessage());
        return;
    }

我进行测试，它返回false，因此可以正常工作

and I do test, it return false, so it works

如何在Android上检测辅助功能设置已启用/禁用

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