java mSecurityInputMethodService 在 logcat 中为 null

mSecurityInputMethodService is null in logcat

提问by Fe Ri

I wrote a little androidapp that should display the current location (last known location) of the smartphone. Although I copied the example code, and tried several other solutions, It seems to have the same error every time. My app consists of a button. Pressing the button should logthe longitude and latitude, but only logs "mSecurityInputMethodService is null".

我写了一个小android应用程序，它应该显示智能手机的当前位置（最后一个已知位置）。虽然我复制了示例代码，并尝试了其他几种解决方案，但似乎每次都出现相同的错误。我的应用程序由一个按钮组成。按下按钮应该记录经度和纬度，但只记录"mSecurityInputMethodService is null"。

Here's the MainActivity.java:

这是MainActivity.java：

public class MainActivity extends Activity {
int response;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button button = (Button)findViewById(R.id.button);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            onbutclick();
        }
    });

}
public void onbutclick(){
    LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
    if(ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
        Location loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if(loc != null){
            Log.d("Latitude",Double.toString(loc.getLatitude()));
            Log.d("Longitude",Double.toString(loc.getLongitude()));
        }

    }else{
        ActivityCompat.requestPermissions(this,new String[] {Manifest.permission.ACCESS_FINE_LOCATION},response);
        Intent inte = getIntent();
        finish();
        startActivity(inte);
    }
}

I also used <uses-permission>in the Manifest file. I would really appreciate an explanation what does "mSecurityInputMethodService is null"really means.

我也在<uses-permission>Manifest 文件中使用过。我真的很感激解释"mSecurityInputMethodService is null"真正意味着什么。

回答by Klatschen

For my Huawei device the following helps:

对于我的华为设备，以下帮助：

Dial:

拨号：

*#*#2846579#*#*

and a hidden menu is shown. Go to "Background Setting" -> "Log setting"and enable the log levels.

并显示隐藏菜单。转到“背景设置”->“日志设置”并启用日志级别。

回答by Ed Walpole

Huawei Phones disable logcat, a small improvement on the above answer

华为手机禁用logcat，对上面的回答做了一个小改进

Dial:

拨号：

*#*#2846579#*#*

*#*#2846579#*#*

and a hidden menu is shown. Go to "Background Setting"-> "Log setting"and enable the log levels.

并显示隐藏菜单。转到“背景设置”-> “日志设置”并启用日志级别。

Specifically enable: AP Log, Charge Logand Sleep Log.

具体启用：AP Log、Charge Log和Sleep Log。

Source: https://www.xda-developers.com/huawei-phones-disable-logcat-heres-how-to-restore-access/

来源：https: //www.xda-developers.com/huawei-phones-disable-logcat-heres-how-to-restore-access/

回答by Haseeb Hassan Asif

I had the same error while accessing keyboard and the keyboard was not showing. And turning on log didn't help. It turns out i was using google keyboard and i switched to huawei swype and it was solved.

我在访问键盘时遇到了同样的错误并且键盘没有显示。打开日志没有帮助。原来我使用的是谷歌键盘，我切换到华为 swype 并解决了。