Android 7.1 系统Setting界面增加返回机制 |
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Android系统在设置了隐藏状态栏和虚拟按键之后,进入Setting界面,没有鼠标的话就无法返回了。这里我们通过修改源码, 实现返回到桌面的功能。具体代码路径如下: packages\apps\Settings\src\com\android\settings\SettingsActivity.java 把源码 if (!mIsShowingDashboard) { mDisplaySearch = false; // UP will be shown only if it is a sub settings if (mIsShortcut) { mDisplayHomeAsUpEnabled = isSubSettings; } else if (isSubSettings) { mDisplayHomeAsUpEnabled = true; } else { mDisplayHomeAsUpEnabled = false; } setTitleFromIntent(intent); Bundle initialArguments = intent.getBundleExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS); switchToFragment(initialFragmentName, initialArguments, true, false, mInitialTitleResId, mInitialTitle, false); } else { // No UP affordance if we are displaying the main Dashboard mDisplayHomeAsUpEnabled = false; // Show Search affordance mDisplaySearch = true; mInitialTitleResId = R.string.dashboard_title; // add argument to indicate which settings tab should be initially selected final Bundle args = new Bundle(); final String extraName = DashboardContainerFragment.EXTRA_SELECT_SETTINGS_TAB; args.putString(extraName, intent.getStringExtra(extraName)); switchToFragment(DashboardContainerFragment.class.getName(), args, false, false, mInitialTitleResId, mInitialTitle, false); } 中的mDisplayHomeAsUpEnabled = false;修改为mDisplayHomeAsUpEnabled = true;即可实现。 修改源码frameworks\base\packages\SettingsLib\src\com\android\settingslib\drawer\SettingsDrawerActivity.java 在源码: mUserManager = UserManager.get(this); if (DEBUG_TIMING) Log.d(TAG, "onCreate took " + (System.currentTimeMillis() - startTime) + " ms"); 后面加上如下代码: toolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { finish();; } }); 从新编译系统即可。 |
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