Platform: ROCKCHIP

OS: Android 6.0

Kernel: 3.10.92

默认user版本不显示开发者选项这一栏,需要通过连续点击版本号7次来显示.

packages\apps\Settings\src\com\android\settings\DeviceInfoSettings.java

static final int TAPS_TO_BE_A_DEVELOPER = 7;

public void onResume() {

super.onResume();

mDevHitCountdown = getActivity().getSharedPreferences(DevelopmentSettings.PREF_FILE,

Context.MODE_PRIVATE).getBoolean(DevelopmentSettings.PREF_SHOW,

android.os.Build.TYPE.equals("eng")) ? -1 : TAPS_TO_BE_A_DEVELOPER;

mDevHitToast = null;

}

public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {

......

if (mDevHitCountdown > 0) {

mDevHitCountdown--;

if (mDevHitCountdown == 0) {

getActivity().getSharedPreferences(DevelopmentSettings.PREF_FILE,

Context.MODE_PRIVATE).edit().putBoolean(

DevelopmentSettings.PREF_SHOW, true).apply();

if (mDevHitToast != null) {

mDevHitToast.cancel();

}

mDevHitToast = Toast.makeText(getActivity(), R.string.show_dev_on,

Toast.LENGTH_LONG);

mDevHitToast.show();

// This is good time to index the Developer Options

Index.getInstance(

getActivity().getApplicationContext()).updateFromClassNameResource(

DevelopmentSettings.class.getName(), true, true);

} else if (mDevHitCountdown > 0

&& mDevHitCountdown < (TAPS_TO_BE_A_DEVELOPER-2)) {

if (mDevHitToast != null) {

mDevHitToast.cancel();

}

mDevHitToast = Toast.makeText(getActivity(), getResources().getQuantityString(

R.plurals.show_dev_countdown, mDevHitCountdown, mDevHitCountdown),

Toast.LENGTH_SHORT);

mDevHitToast.show();

}

} else if (mDevHitCountdown < 0) { //点击完7次之后显示

if (mDevHitToast != null) {

mDevHitToast.cancel();

}

mDevHitToast = Toast.makeText(getActivity(), R.string.show_dev_already,

Toast.LENGTH_LONG);

mDevHitToast.show();

}

}

......

}

而默认开机是否显示由变量showDev控制

packages\apps\Settings\src\com\android\settings\SettingsActivity.java

private void updateTilesList(List target) {

final boolean showDev = mDevelopmentPreferences.getBoolean(

DevelopmentSettings.PREF_SHOW,

android.os.Build.TYPE.equals("eng")); //因此eng才返回true

......

} else if (id == R.id.development_settings) {

if (!showDev || um.hasUserRestriction(

UserManager.DISALLOW_DEBUGGING_FEATURES)) {

removeTile = true; //showDev为false则不显示

}

}

}

解决方法:

diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java

index 645add3..11a9c55 100755

--- a/src/com/android/settings/SettingsActivity.java

+++ b/src/com/android/settings/SettingsActivity.java

@@ -1236,9 +1236,11 @@ public class SettingsActivity extends Activity

}

private void updateTilesList(List target) {

-        final boolean showDev = mDevelopmentPreferences.getBoolean(

-                DevelopmentSettings.PREF_SHOW,

-                android.os.Build.TYPE.equals("eng"));

+       /*Kris, 170413, show development options anytime.*/

+      //  final boolean showDev = mDevelopmentPreferences.getBoolean(

+           //     DevelopmentSettings.PREF_SHOW,

+                //android.os.Build.TYPE.equals("eng"));

+         final boolean showDev = true;