【免费】PKMS第二节课-预习资料1资源-CSDN文库

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PKMS第二节课

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签名:

静默安装，签名，须知内容：

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做系统应用开发测试时, 是 adb push 的安装方式:

// 如果想实现，静默安装，就需要设置好UID，只有设置这个UID后，才有安装的权限

// 但是这个UID必须要求有系统的[签名], 而这个系统的[签名]是属于各大手机厂商的机密，也

意味着非常的坑爹

// 如果是系统厂商要做这种静默安装, 那就是非常容易的事情, 因为系统厂商可以轻而易举的拿

到系统的[签名]

mSettings.addSharedUserLPw("android.uid.system", Process.SYSTEM_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.phone", RADIO_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.log", LOG_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.nfc", NFC_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.bluetooth", BLUETOOTH_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.shell", SHELL_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.se", SE_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

   mSettings.addSharedUserLPw("android.uid.networkstack", NETWORKSTACK_UID,

       ApplicationInfo.FLAG_SYSTEM,

ApplicationInfo.PRIVATE_FLAG_PRIVILEGED);

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核心函数：

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同学们注意，现在演示，上面 “核心函数” 实例：

 

 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

 

 <uses-permission android:name="android.permission.CALL_PHONE" />

 <uses-permission android:name="android.permission.READ_PHONE_STATE" />

 

 <uses-permission android:name="android.permission.SEND_SMS" />

 <uses-permission android:name="android.permission.READ_SMS" />

 

 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

ContextCompat.checkSelfPermission

检查应用是否具有某个危险权限。如果应用具有此权限，方法将返回

PackageManager.PERMISSION_GRANTED，并且应用可以继续操作。如果应用不具有此权限，方法将返回

PackageManager.PERMISSION_DENIED，且应用必须明确向用户要求权限。

ActivityCompat.requestPermissions

应用可以通过这个方法动态申请权限，调用后会弹出一个对话框提示用户授权所申请的权限。

ActivityCompat.shouldShowRequestPermissionRationale

如果应用之前请求过此权限但用户拒绝了请求，此方法将返回 true。如果用户在过去拒绝了权限请求，并在

权限请求系统对话框中选择了 Don't ask again 选项，此方法将返回 false。如果设备规范禁止应用具

有该权限，此方法也会返回 false。

onRequestPermissionsResult

当应用请求权限时，系统将向用户显示一个对话框。当用户响应时，系统将调用应用的

onRequestPermissionsResult() 方法，向其传递用户响应，处理对应的场景。

<uses-permission android:name="android.permission.READ_CONTACTS" />

@Override

 protected void onCreate(Bundle savedInstanceState) {

   super.onCreate(savedInstanceState);

   setContentView(R.layout.activity_main);

   requestPermission();

 }

 // 第二步：封装了一个requestPermission方法来动态检查和申请权限

 private void requestPermission() {

   Log.i(TAG,"requestPermission");

   // Here, thisActivity is the current activity

   if (ContextCompat.checkSelfPermission(this,

Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {

     Log.i(TAG,"checkSelfPermission");

     // Should we show an explanation?

     if (ActivityCompat.shouldShowRequestPermissionRationale(this,

Manifest.permission.READ_CONTACTS)) {

       Log.i(TAG,"shouldShowRequestPermissionRationale");

       // Show an expanation to the user *asynchronously* -- don't

block

       // this thread waiting for the user's response! After the user

       // sees the explanation, try again to request the permission.

       ActivityCompat.requestPermissions(this,

           new String[]{Manifest.permission.READ_CONTACTS},

           MY_PERMISSIONS_REQUEST_READ_CONTACTS);

     } else {

       Log.i(TAG,"requestPermissions");

       // No explanation needed, we can request the permission.

       ActivityCompat.requestPermissions(this,

           new String[]{Manifest.permission.READ_CONTACTS},

           MY_PERMISSIONS_REQUEST_READ_CONTACTS);

       // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an

       // app-defined int constant. The callback method gets the

       // result of the request.

     }

   }

 }

// 第三步：重写onRequestPermissionsResult方法根据用户的不同选择做出响应。

 @Override

 public void onRequestPermissionsResult(int requestCode,

                     String permissions[], int[]

grantResults) {

   switch (requestCode) {

     case MY_PERMISSIONS_REQUEST_READ_CONTACTS: {

       // If request is cancelled, the result arrays are empty.

       if (grantResults.length > 0

           && grantResults[0] == PackageManager.PERMISSION_GRANTED)

{

         Log.i(TAG,"onRequestPermissionsResult granted");

         // permission was granted, yay! Do the

         // contacts-related task you need to do.

       } else {

         Log.i(TAG,"onRequestPermissionsResult denied");

         // permission denied, boo! Disable the

         // functionality that depends on this permission.

         showWaringDialog();

       }

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