Android系统SD卡升级
一般在本地进行OTA升级时，将升级包拷贝到SD卡，然后进入recovery模式选择升级包进行升级，但不是很方便，于是做了一个小应用，通过调用RecoverySystem类中的接口来进行升级。实际上最终也是在recovery模式下进行升级，只不过是在应用层对升级包进行签名验证和发送升级命令。
内容比较简单直接上代码。
一、主要类
SdCardUpgradeWarning.java
一个简单的Activity，对用户升级前进行一些警告提示。
SdCardUpgradeIntroduction.java
对升级过程一些注意事项的提示。
SdCardUpgradeProcess.java
这个是最主要的一个类，读取升级包并进行验证，然后调用installPackage进行升级。
二、详细代码
1.AndroidManifest.xml
2.SdCardUpgradeWarning.java
public class SdCardUpgradeWarning extends Activity implements View.OnClickListener {
private static final String TAG = "SdCardUpgradeWarning";
private static String updatePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/update.zip";
private Button mCancle;
private Button mConfirm;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sdcardupgrade_warning);
mCancle = (Button) findViewById(R.id.cancle);
mCancle.setOnClickListener(this);
mConfirm = (Button) findViewById(R.id.confirm);
mConfirm.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.cancle:
finish();
break;
case R.id.confirm:
confirmUpdatePackageExist();
break;
default:
break;
}
}
public void confirmUpdatePackageExist() {
File updatePackage = new File(updatePath);
if (isFileExist(updatePackage)) {
boolean isZipfileExist = updatePackage.exists();
if (!isZipfileExist) {
Toast toast = Toast.makeText(getApplicationContext(), getString(R.string.update_package_not_found), Toast.LENGTH_LONG);
toast.setGravity(0, 0, 100);
toast.show();
} else {
Intent intent = new Intent();
intent.setClass(this, SdCardUpgradeIntroduction.class);
startActivity(intent);
}
} else {
Toast toast = Toast.makeText(getApplicationContext(), getString(R.string.sdcard_not_mounted), Toast.LENGTH_LONG);
toast.setGravity(0, 0, 100);
toast.show();
}
}
public boolean isFileExist(File file) {
if (file.exists()) {
return true;
} else {
Log.d(TAG, "Update zip file not exist.");
return false;
}
}
}public class SdCardUpgradeIntroduction extends Activity implements View.OnClickListener {
private Button mcancle;
private Button mconfirm;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sdcardupgrade_introduction);
mcancle=(Button)findViewById(R.id.cancle);
mcancle.setOnClickListener(this);
mconfirm=(Button)findViewById(R.id.confirm);
mconfirm.setOnClickListener(this);
}
@Override
public void onClick(View v){
switch(v.getId()){
case R.id.cancle:
finish();
break;
case R.id.confirm:
Intent intent = new Intent();
intent.setClass(this, SdCardUpgradeProcess.class);
startActivity(intent);
break;
default:
break;
}
}
}public class SdCardUpgradeProcess extends Activity implements RecoverySystem.ProgressListener {
private static final String TAG = "SdCardUpgradeProcess";
private static final int VERIFY_COMPLETE = 70;
private static final int INSTALL_COMPLETE = 100;
private static String updatePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/update.zip";
private ProgressBar mProcessbar;
private TextView mUpdateStep;
private TextView mUpdateState;
private TextView mNotify;
private TextView sdcard_update_introduction_textview_one;
private TextView sdcard_update_introduction_textview_two;
private ImageView mCompleteImg;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.sdcardupgrade_processbar);
mUpdateStep = (TextView)findViewById(R.id.step_number);
mUpdateState = (TextView)findViewById(R.id.processbar_title);
mNotify = (TextView)findViewById(R.id.update_notify);
mCompleteImg = (ImageView)findViewById(R.id.update_complete);
mProcessbar=(ProgressBar)findViewById(R.id.processbar);
mProcessbar.setMax(110);
mProcessbar.setProgress(0);
mProcessbar.setIndeterminate(false);
runnable.start();
}
Handler mHandler = new Handler(){
public void handleMessage(Message msg) {
mProcessbar.setProgress(msg.arg1);
switch(msg.arg1){
case VERIFY_COMPLETE:
mUpdateStep.setText(getString(R.string.the_next_step_number));
mUpdateState.setText(getString(R.string.install_process));
mNotify.setText("");
break;
case INSTALL_COMPLETE:
mUpdateState.setText(getString(R.string.install_process_complete));
mNotify.setText(getString(R.string.restart));
mCompleteImg.setBackgroundResource(R.drawable.update_complete);
break;
default:
break;
}
}
};
Thread runnable = new Thread(){
@Override
public void run() {
Log.d(TAG, "Start update .............");
File file = new File(updatePath);
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "SdCardUpgrade ProcessBar");
try{
wl.acquire();//升级保持亮屏状态
RecoverySystem.verifyPackage(file, SdCardUpgradeProcess.this, null);
Log.d(TAG,"Verify package complete.");
RecoverySystem.installPackage(SdCardUpgradeProcess.this, file);
}catch(Exception e){
Log.e(TAG, e.getMessage(), e);
}finally{
wl.release();
}
}
};
@Override
public void onProgress(int progress) {
Log.d(TAG,"progress="+progress);
Message msg = Message.obtain();
msg.arg1 = progress;
mHandler.sendMessage(msg);
}
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
System.exit(0);
}
}sdcardupgrade_warning.xml
SdCardUpgrade
Settings
SoftWare Upgrade
SD card Upgrade
Warning
During the upgrade,do not remove the battery,UIM card,and SD card.
Make sure that the battery level is sufficent.
You are recommanded to back up data to SD card before upgrade.
Cancle
Confirm
The upgrade takes about two minutes.Do not perform any operations during the upgrade.The upgrade application will automatically stop in 30s.
Firmware update
Unpacking...
The full update will take about 2 minutes.Please do not turn off the device during this period.
Do not turn off the device.
Step 1/2
Step 2/2
Install...
Update Complete!
restart...
No update package found!
SD card not mounted!
生成apk后需要使用平台签名文件进行签名，或者在Android.mk文件中配置签名属性并在源码中编译，否则无法运行。
三、最终效果图
