安卓如何动态申请android.permission.READ_PHONE_STATE权限完整代码

以下是安卓动态申请android.permission.READ_PHONE_STATE权限的完整代码示例：

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE_READ_PHONE_STATE = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 检查是否已授予android.permission.READ_PHONE_STATE权限
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED) {
            // 已经授予了android.permission.READ_PHONE_STATE权限
            String imei = getIMEI();
            Toast.makeText(this, "IMEI: " + imei, Toast.LENGTH_SHORT).show();
        } else {
            // android.permission.READ_PHONE_STATE权限未被授予，需要请求权限
            ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.READ_PHONE_STATE }, REQUEST_CODE_READ_PHONE_STATE);
        }
    }

    private String getIMEI() {
        TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        if (telephonyManager != null) {
            return telephonyManager.getDeviceId();
        }
        return null;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        if (requestCode == REQUEST_CODE_READ_PHONE_STATE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // 用户已授予android.permission.READ_PHONE_STATE权限
                String imei = getIMEI();
                Toast.makeText(this, "IMEI: " + imei, Toast.LENGTH_SHORT).show();
            } else {
                // 用户拒绝了android.permission.READ_PHONE_STATE权限
                Toast.makeText(this, "需要android.permission.READ_PHONE_STATE权限才能获取IMEI号", Toast.LENGTH_SHORT).show();
            }
        }
    }
}

注意，如果您的应用程序在Android 6.0以下的版本上运行，您可以在AndroidManifest.xml文件中声明android.permission.READ_PHONE_STATE权限而不需要动态请求权限。