一.第一种方案
1.1.将客户应用 内置到system/app 也就是将应用提升至系统级别 需要注意的是要将依赖lib库 拷贝到system/lib 下面
静默升级 也需要 更新 或者添加的库以前没有的库 建议：使用到不需要更新的apk 或者手动更新
二.第二种方案
2.1.预装应有 到system/preinstall 但不允许卸载 静默升级 推荐使用
仨.第二种方案 两种改法 OS Android5.1
3.1.Fist 改法
拖动到删除按钮 直接识别到可不包名不让卸载
diff --git a/packages/apps/PackageInstaller/src/com/android/packageinstaller/UninstallerActivity.java b/packages/apps/PackageInstaller/src/com/android/packageinstaller/UninstallerActivity.java
index 449bfad..5d12be9 100755
--- a/packages/apps/PackageInstaller/src/com/android/packageinstaller/UninstallerActivity.java
+++ b/packages/apps/PackageInstaller/src/com/android/packageinstaller/UninstallerActivity.java
@@ -216,8 +216,13 @@ public class UninstallerActivity extends Activity implements OnCancelListener{
// Continue as the ActivityInfo isn't critical.
}
}
-
- showConfirmationDialog();
+
+ if((packageName != null)&& packageName.contains("com.gatsby.test")){
+ Log.d("gatsby","UninstallerActivity uninstall ");
+ System.exit(0);
+ }else {
+ showConfirmationDialog();
+ }
}
public void OnCreateDialog(){
3.2.Second 改法 识别包名不显示 卸载按钮
a.packages\apps\Launcher3\src\com\android\launcher3\DeleteDropTarget.java
boolean useDeleteLabel = !useUninstallLabel && source.supportsDeleteDropTarget();
if(info instanceof AppInfo){
AppInfo appInfo = (AppInfo) info;
if(appInfo.componentName.getPackageName().equals("com.gatsby.test")){
useUninstallLabel = false;
}
}
控制是否显示长按 “卸载” 的选项
@Override
public void onDragStart(DragSource source, Object info, int dragAction) {
boolean isVisible = true;
boolean useUninstallLabel = !LauncherAppState.isDisableAllApps() &&
isAllAppsApplication(source, info);
boolean useDeleteLabel = !useUninstallLabel && source.supportsDeleteDropTarget();
// If we are dragging an application from AppsCustomize, only show the control if we can
// delete the app (it was downloaded), and rename the string to "uninstall" in such a case.
// Hide the delete target if it is a widget from AppsCustomize.
if (!willAcceptDrop(info) || isAllAppsWidget(source, info)) {
isVisible = false;
}
if (useUninstallLabel) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
UserManager userManager = (UserManager)
getContext().getSystemService(Context.USER_SERVICE);
Bundle restrictions = userManager.getUserRestrictions();
if (restrictions.getBoolean(UserManager.DISALLOW_APPS_CONTROL, false)
|| restrictions.getBoolean(UserManager.DISALLOW_UNINSTALL_APPS, false)) {
isVisible = false;
}
}
}
if (useUninstallLabel) {
setCompoundDrawablesRelativeWithIntrinsicBounds(mUninstallDrawable, null, null, null);
} else if (useDeleteLabel) {
setCompoundDrawablesRelativeWithIntrinsicBounds(mRemoveDrawable, null, null, null);
} else {
isVisible = false;
}
mCurrentDrawable = (TransitionDrawable) getCurrentDrawable();
mActive = isVisible;
resetHoverColor();
((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
if (isVisible && getText().length() > 0) {
setText(useUninstallLabel ? R.string.delete_target_uninstall_label
: R.string.delete_target_label);
}
}
b. packages\apps\Settings\src\com\android\settings\applications\InstalledAppDetails.java
设置应用信息 卸载项目
mUninstallButton.setOnClickListener(this); 让点击无效
private void initUninstallButtons() {
mUpdatedSysApp = (mAppEntry.info.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
final boolean isBundled = (mAppEntry.info.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
boolean enabled = true;
if (mUpdatedSysApp) {
mUninstallButton.setText(R.string.app_factory_reset);
boolean showSpecialDisable = false;
if (isBundled) {
showSpecialDisable = handleDisableable(mSpecialDisableButton);
mSpecialDisableButton.setOnClickListener(this);
}
if (mAppControlRestricted) {
showSpecialDisable = false;
}
mMoreControlButtons.setVisibility(showSpecialDisable ? View.VISIBLE : View.GONE);
} else {
mMoreControlButtons.setVisibility(View.GONE);
if (isBundled) {
enabled = handleDisableable(mUninstallButton);
} else if ((mPackageInfo.applicationInfo.flags
& ApplicationInfo.FLAG_INSTALLED) == 0
&& mUserManager.getUsers().size() >= 2) {
// When we have multiple users, there is a separate menu
// to uninstall for all users.
mUninstallButton.setText(R.string.uninstall_text);
enabled = false;
} else {
mUninstallButton.setText(R.string.uninstall_text);
}
}
// If this is a device admin, it can't be uninstalled or disabled.
// We do this here so the text of the button is still set correctly.
if (mDpm.packageHasActiveAdmins(mPackageInfo.packageName)) {
enabled = false;
}
// Home apps need special handling. Bundled ones we don't risk downgrading
// because that can interfere with home-key resolution. Furthermore, we
// can't allow uninstallation of the only home app, and we don't want to
// allow uninstallation of an explicitly preferred one -- the user can go
// to Home settings and pick a different one, after which we'll permit
// uninstallation of the now-not-default one.
if (enabled && mHomePackages.contains(mPackageInfo.packageName)) {
if (isBundled) {
enabled = false;
} else {
ArrayList<ResolveInfo> homeActivities = new ArrayList<ResolveInfo>();
ComponentName currentDefaultHome = mPm.getHomeActivities(homeActivities);
if (currentDefaultHome == null) {
// No preferred default, so permit uninstall only when
// there is more than one candidate
enabled = (mHomePackages.size() > 1);
} else {
// There is an explicit default home app -- forbid uninstall of
// that one, but permit it for installed-but-inactive ones.
enabled = !mPackageInfo.packageName.equals(currentDefaultHome.getPackageName());
}
}
}
if (mAppControlRestricted) {
enabled = false;
}
mUninstallButton.setEnabled(enabled);
if (enabled) {
// Register listener
mUninstallButton.setOnClickListener(this);
}
}