在进行Android系统开发的时候,有些特定的情况需要设置系统永不锁屏,永不休眠。本篇文章给大家介绍Android 永不锁屏,开机不锁屏,删除设置中休眠时间选项,需要的朋友一起学习吧。
Android 6.0.1
Create:2016-02-29
1.Settings 删掉屏幕待机选项
packages/apps/Settings/res/xml/display_settings.xml<!-- Hide screen sleep<ListPreferenceandroid:key="screen_timeout"android:title="@string/screen_timeout"android:summary="@string/screen_timeout_summary"android:persistent="false"android:entries="@array/screen_timeout_entries"android:entryValues="@array/screen_timeout_values" /> -->
注释掉这个ListPreference
packages/apps/Settings/src/com/android/settings/DisplaySettings.java
添加if条件,如果没有找到这个preference就不执行相关操作;具体可以参考被隐藏的 night_mode
mScreenTimeoutPreference = (ListPreference) findPreference(KEY_SCREEN_TIMEOUT);if (mScreenTimeoutPreference !=null ) {final long currentTimeout = Settings.System.getLong(resolver, SCREEN_OFF_TIMEOUT,FALLBACK_SCREEN_TIMEOUT_VALUE);mScreenTimeoutPreference.setValue(String.valueOf(currentTimeout));mScreenTimeoutPreference.setOnPreferenceChangeListener(this);disableUnusableTimeouts(mScreenTimeoutPreference);updateTimeoutPreferenceDescription(currentTimeout);}
2.禁止锁屏
frameworks/base/packages/SettingsProvider/res/values/defaults.xml<bool name="def_lockscreen_disabled">false</bool> 改为 true;即默认禁止锁屏frameworks/base/core/res/res/values/config.xml<integer name="config_multiuserMaximumUsers">1</integer> 不允许多用户;即最大用户数为1
分别编译frameworks/base/packages/SettingsProvider 与 frameworks/base
编译后push 到 system/priv-app/SettingsProvider/SettingsProvider.apk system/framework/framework.jar
删去机器中对应的oat目录。重启或恢复出厂设置。第一次开机时,会先出现status bar,launcher要等一会才出来。
之后重启就可以直接进入launcher。机器会默认不锁屏。但还是会进入sleep状态。
源码流程:
frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.javaif (upgradeVersion == 54)// 版本为54才会设置timeout......private void upgradeScreenTimeoutFromNever(SQLiteDatabase db) {// See if the timeout is -1 (for "Never").Cursor c = db.query(TABLE_SYSTEM, new String[] { "_id", "value" }, "name=? AND value=?",new String[] { Settings.System.SCREEN_OFF_TIMEOUT, "-1" },null, null, null);SQLiteStatement stmt = null;if (c.getCount() > 0) {c.close();try {stmt = db.compileStatement("INSERT OR REPLACE INTO system(name,value)"+ " VALUES(?,?);");// Set the timeout to 30 minutes in millisecondsloadSetting(stmt, Settings.System.SCREEN_OFF_TIMEOUT,Integer.toString(30 * 60 * 1000));} finally {if (stmt != null) stmt.close();}} else {c.close();}}......if (SystemProperties.getBoolean("ro.lockscreen.disable.default", false) == true) {loadSetting(stmt, Settings.System.LOCKSCREEN_DISABLED, "1");} else {loadBooleanSetting(stmt, Settings.System.LOCKSCREEN_DISABLED,R.bool.def_lockscreen_disabled);}
timeout若是-1,则永不锁屏
读取"ro.lockscreen.disable.default",如果默认为true,则设置禁止锁屏;否则从xml中读配置
frameworks/base/packages/SettingsProvider/res/values/defaults.xml<integer name="def_screen_off_timeout">60000</integer><bool name="def_lockscreen_disabled">false</bool>`
禁止锁屏默认为false
以上内容是小编给大家介绍的设置Android系统永不锁屏永不休眠的方法,希望对大家有所帮助。
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