测试READ_PHONE_STATE的Android M权限（危险权限） _Android

古人已用三冬足，年少今开万卷余。这篇文章主要讲述测试READ_PHONE_STATE的Android M权限（危险权限）相关的知识，希望能为你提供帮助。
如果设备在使用getLine1Number（）尝试获取电话号码时运行android 6.0或更高版本：
java.lang.SecurityException：需要READ_PHONE_STATE：用户10184和当前进程都没有android.permission.READ_PHONE_STATE。这是出来的。
我宣布许可为：

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

答案在Android 6.0中，您需要明确要求用户授予权限。仅仅在清单中声明它是不够的。
这篇文章中的article是开始学习新模型的好地方，但我将简要总结一下。
每次执行需要“危险权限”的操作时，都需要检查当前是否已授予权限，因为用户可以随时撤消该权限。
【测试READ_PHONE_STATE的Android M权限（危险权限）】这可以使用checkSelfPermission方法完成。

if (ContextCompat.checkSelfPermission(thisActivity, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) { // We do not have this permission. Let's ask the user }

您可以使用requestPermissions方法请求权限

ActivityCompat.requestPermissions(thisActivity, new String[]{Manifest.permission.READ_PHONE_STATE}, PERMISSION_READ_STATE);

其中PERMISSION_READ_STATE是您定义的常量整数，以便稍后检入回调方法。
然后，您将在活动中覆盖onRequestPermissionsResult，并查看是否已授予权限。如果是的话，你可以继续进行危险的行动。

@Override public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { switch (requestCode) { case PERMISSION_READ_STATE: { if (grantResults.length > 0 & & grantResults[0] == PackageManager.PERMISSION_GRANTED) { // permission granted! // you may now do the action that requires this permission } else { // permission denied } return; }} }

另一答案

public class MainActivity extends AppCompatActivity {TextView textView; String device_unique_id,IMEI; private static final int MY_PERMISSIONS_REQUEST_READ_PHONE_STATE = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView)findViewById(R.id.textView); } public void GetImei(View view) {loadIMEI(); }public void loadIMEI() { // Check if the READ_PHONE_STATE permission is already available. if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) { if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_PHONE_STATE)) { //get_imei_data(); } else { ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, MY_PERMISSIONS_REQUEST_READ_PHONE_STATE); } } else {TelephonyManager mngr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); IMEI = mngr.getDeviceId(); device_unique_id = Settings.Secure.getString(this.getContentResolver(), Settings.Secure.ANDROID_ID); textView.setText(device_unique_id+"----"+mngr.getDeviceId()); // READ_PHONE_STATE permission is already been granted. Toast.makeText(this,"Alredy granted",Toast.LENGTH_SHORT).show(); } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,@NonNull int[] grantResults) {if (requestCode == MY_PERMISSIONS_REQUEST_READ_PHONE_STATE) {if (grantResults.length == 1 & & grantResults[0] == PackageManager.PERMISSION_GRANTED) {//Toast.makeText(this,"Alredy DONE",Toast.LENGTH_SHORT).show(); TelephonyManager mngr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); IMEI = mngr.getDeviceId(); device_unique_id = Settings.Secure.getString(this.getContentResolver(),Settings.Secure.ANDROID_ID); textView.setText(device_unique_id+"----"+mngr.getDeviceId()); } else { Toast.makeText(this,"ehgehfg",Toast.LENGTH_SHORT).show(); } } }