思路:
当获取到上下键值时,判断当前界面如果是设置主界面,就让它不执行全选代码
路径:frameworks/base/core/java/android/view/ViewRootImpl.java
if (direction!=33 || (direction == 33 && (!"com.android.settings.homepage.SettingsHomepageActivity".equals(cn.getClassName()))))
private boolean performFocusNavigation(KeyEvent event) {
if (direction != 0) {
View focused = mView.findFocus();
if (focused != null) {
View v = focused.focusSearch(direction);
if (v != null && v != focused) {
// do the math the get the interesting rect
// of previous focused into the coord system of
// newly focused view
focused.getFocusedRect(mTempRect);
if (mView instanceof ViewGroup) {
((ViewGroup) mView).offsetDescendantRectToMyCoords(
focused, mTempRect);
((ViewGroup) mView).offsetRectIntoDescendantCoords(
v, mTempRect);
}
+ //wangrui On the home page of the settings, cancel the selection and select the first level directory instead
+ am = (android.app.ActivityManager) mContext.getSystemService(ACTIVITY_SERVICE);
+ cn = am.getRunningTasks(1).get(0).topActivity;
+ if (direction!=33 || (direction == 33 && (!"com.android.settings.homepage.SettingsHomepageActivity".equals(cn.getClassName())))) {
+ if (v.requestFocus(direction, mTempRect)) {
+ playSoundEffect(SoundEffectConstants
+ .getContantForFocusDirection(direction));
+ return true;
+ }
+ }
}
}