[移动开发]Android 10 Settings应用二级菜单关于设备-Android版本中基带版本添加点击事件

效果图
需求：给基带版本添加点击事件
代码路径：
packages/apps/Settings/src/com/android/settings/deviceinfo/firmwareversion/FirmwareVersionSettings.java
packages/apps/Settings/res/xml/firmware_version.xml
1、在/firmware_version.xml布局文件中，下面就是基带版本处理

<Preference
    android:key="base_band"
    android:title="@string/baseband_version"
    android:summary="@string/summary_placeholder"
    settings:enableCopying="true"
    settings:controller="com.android.settings.deviceinfo.firmwareversion.BasebandVersionPreferenceController"/>

2、给基带版本添加点击事件

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.SystemProperties;
import androidx.preference.Preference;
import android.text.TextUtils;

import androidx.annotation.VisibleForTesting;

import com.android.settings.R;
import com.android.settings.Utils;
import com.android.settings.core.BasePreferenceController;
import com.android.settings.deviceinfo.SupportCPVersion;
public class BasebandVersionPreferenceController extends BasePreferenceController {

    @VisibleForTesting
    static final String BASEBAND_PROPERTY = "gsm.version.baseband";
    private static final String KEY_BASEBAND_VERSION = "baseband_version";
    public BasebandVersionPreferenceController(Context context, String preferenceKey) {
        super(context, preferenceKey);
    }

    @Override
    public int getAvailabilityStatus() {
        return !Utils.isWifiOnly(mContext) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
    }

    @Override
    public CharSequence getSummary() {
        /* UNISOC:1072208 Support "Show CP2 Version" @{ */
        String basebandInfo = "";
        if (mContext.getResources().getBoolean(R.bool.config_support_showCp2Info)){
            // return baseband version + cp2 version
            basebandInfo = SupportCPVersion.getInstance().getBasedSummary(mContext,
                    BASEBAND_PROPERTY);
        } else {
            // return baseband version only
            basebandInfo = SystemProperties.get(BASEBAND_PROPERTY,
                    mContext.getString(R.string.device_info_default));
        }
        return basebandInfo;
        /* @} */
    }
    private int mEngHitCountdown = 4;
    @Override
    public String getPreferenceKey() {
        return KEY_BASEBAND_VERSION;
    }

    @Override
    public boolean handlePreferenceTreeClick(Preference preference) {
        if (!TextUtils.equals(preference.getKey(), KEY_BASEBAND_VERSION)) {
            return false;
        }
        if (Utils.isMonkeyRunning()) {
            return false;
        }

        if (mEngHitCountdown > 0) {
            mEngHitCountdown--;
            if (mEngHitCountdown == 0) {
                launchEngineerMode();
                mEngHitCountdown = 4;
            }
        }
        return true;
    }

    private void launchEngineerMode() {
        String packageName = "com.sprd.engineermode";
        String activity = "com.sprd.engineermode.EngineerModeActivity";
        ComponentName component = new ComponentName(packageName, activity);
        Intent intent = new Intent();
        intent.setComponent(component);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        mContext.startActivity(intent);
    }
}