动态获取（内存）DDR和（存储）EMCC大小

1.动态获取DDR


/** Copyright (C) 2017 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package com.android.settings.deviceinfo;
import android.content.Context;
import android.os.Build;
import android.util.Log;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.SWLogger;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.DeviceInfoUtils;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;public class StoragePreferenceController extends BasePreferenceController {private static final String TAG = "DeviceModelPrefCtrl";private static SWLogger log = SWLogger.getLogger(StoragePreferenceController.class);public StoragePreferenceController(Context context, String key) {super(context, key);}@Overridepublic void displayPreference(PreferenceScreen screen) {super.displayPreference(screen);}@Overridepublic int getAvailabilityStatus() {return AVAILABLE;}@Overridepublic CharSequence getSummary() {return getStorage();}public String getStorage() {int flashSize = (int) getFlashSize();String value = String.valueOf(flashSize) + "GB";log.d("getStorage==size==" + value);return value;}private float getFlashSize() {Process process = null;InputStream inputStream = null;InputStreamReader inputStreamReader = null;BufferedReader bufferedReader = null;float flashSize = 0L;try {process = Runtime.getRuntime().exec("cat /sys/block/mmcblk2/size");inputStream = process.getInputStream();byte[] bytes = new byte[1024];inputStreamReader = new InputStreamReader(inputStream); //读取//创建字符流缓冲区bufferedReader = new BufferedReader(inputStreamReader); //从字符输入流中读取文本，缓冲各个字符，从而实现字符、数组和行的String line = bufferedReader.readLine();if (line != null) {long size = Long.parseLong(line);log.e("getFlashSize==Size==" + size);if (size > 0) {flashSize = (float) size / 1024L / 1024L / 2L;log.e("getFlashSize==flashSize==" + flashSize);}}} catch (Exception e) {e.printStackTrace();} finally {try {if (process != null) {process.destroy();}if (inputStream != null) {inputStream.close();}if (inputStreamReader != null) {inputStreamReader.close();}if (bufferedReader != null) {bufferedReader.close();}} catch (Exception e) {e.printStackTrace();}}return flashSize = Math.round((float) flashSize) + 1;}}

2.获取EMCC大小


/** Copyright (C) 2017 The Android Open Source Project** Licensed under the Apache License, Version 2.0 (the "License");* you may not use this file except in compliance with the License.* You may obtain a copy of the License at**      http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package com.android.settings.deviceinfo;
import android.content.Context;
import android.os.Build;
import android.util.Log;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.SWLogger;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.DeviceInfoUtils;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;public class StoragePreferenceController extends BasePreferenceController {private static final String TAG = "DeviceModelPrefCtrl";private static SWLogger log = SWLogger.getLogger(StoragePreferenceController.class);public StoragePreferenceController(Context context, String key) {super(context, key);}@Overridepublic void displayPreference(PreferenceScreen screen) {super.displayPreference(screen);}@Overridepublic int getAvailabilityStatus() {return AVAILABLE;}@Overridepublic CharSequence getSummary() {return getStorage();}public String getStorage() {int flashSize = (int) getFlashSize();String value = String.valueOf(flashSize) + "GB";log.d("getStorage==size==" + value);return value;}private float getFlashSize() {Process process = null;InputStream inputStream = null;InputStreamReader inputStreamReader = null;BufferedReader bufferedReader = null;float flashSize = 0L;try {process = Runtime.getRuntime().exec("cat /sys/block/mmcblk2/size");inputStream = process.getInputStream();byte[] bytes = new byte[1024];inputStreamReader = new InputStreamReader(inputStream); //读取//创建字符流缓冲区bufferedReader = new BufferedReader(inputStreamReader); //从字符输入流中读取文本，缓冲各个字符，从而实现字符、数组和行的String line = bufferedReader.readLine();if (line != null) {long size = Long.parseLong(line);log.e("getFlashSize==Size==" + size);if (size > 0) {flashSize = (float) size / 1024L / 1024L / 2L;log.e("getFlashSize==flashSize==" + flashSize);}}} catch (Exception e) {e.printStackTrace();} finally {try {if (process != null) {process.destroy();}if (inputStream != null) {inputStream.close();}if (inputStreamReader != null) {inputStreamReader.close();}if (bufferedReader != null) {bufferedReader.close();}} catch (Exception e) {e.printStackTrace();}}return flashSize = Math.round((float) flashSize) + 1;}}

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动态获取（内存）DDR和（存储）EMCC大小

1.动态获取DDR

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