Android P中设置电池中省电模式默认开启

最新推荐文章于 2024-05-28 11:35:14 发布

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#Android P #MTK Settings #Android P Settings

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本文详细介绍了如何在安卓系统的SettingsProvider与BatterySaverStateMachine类中，修改低电量模式的默认设置，通过在DatabaseHelper.java文件中添加或修改特定代码，实现开机时自动启用低电量模式。

如图：

修改如下：

vendor/mediatek/proprietary/packages/apps/SettingsProvider/src/com/android/providers/settings/DatabaseHelper.java中t添加值：

 private void loadGlobalSettings(SQLiteDatabase db) {
        SQLiteStatement stmt = null;
        try {
            stmt = db.compileStatement("INSERT OR IGNORE INTO global(name,value)"
                    + " VALUES(?,?);");
            //add begin
            loadSetting(stmt, Settings.Global.LOW_POWER_MODE,1);
            loadSetting(stmt, Settings.Global.LOW_POWER_MODE_STICKY,1);
            //loadSetting(stmt, Settings.Global.LOW_POWER_MODE_TRIGGER_LEVEL,15);
            //end			

            // --- Previously in 'system'
            loadBooleanSetting(stmt, Settings.Global.AIRPLANE_MODE_ON,
                    R.bool.def_airplane_mode_on);
            ...........
            ...........
}

或者修改如下类：

frameworks/base/services/core/java/com/android/server/power/batterysaver/BatterySaverStateMachine.java

 /**
     * {@link com.android.server.power.PowerManagerService} calls it when the system is booted.
     */
    public void onBootCompleted() {
        if (DEBUG) {
            Slog.d(TAG, "onBootCompleted");
        }
        // Just booted. We don't want LOW_POWER_MODE to be persisted, so just always clear it.
        putGlobalSetting(Global.LOW_POWER_MODE, 1);//直接置为1
.....
.....
}