Question

我在获取IMEI时遇到问题没有，我已经从谷歌中删除了几乎所有代码，但仍然遇到了同样的错误，

Menifest

mod_headers

MainActivity.java

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


    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

content_main.xml

  import android.content.Context;
import android.os.Bundle;
import android.provider.Settings;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.telephony.TelephonyManager;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    TelephonyManager tel;
    TextView imei;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


        tel = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

        imei = (TextView) findViewById(R.id.textView2);
        imei.setText(tel.getDeviceId().toString());

    }

}

logcat的：

 <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="50dp"
        android:textColor="#4169E1"
        android:textSize="18sp"
        android:text="IMEI Number" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:textSize="15sp"
        android:text="IMEI" />

请帮我解决我的问题

Answer 1

这是因为你必须在android版本6.0中为android.permission.READ_PHONE_STATE

询问用户的权限

int permission = ContextCompat.checkSelfPermission(thisActivity,
    Manifest.permission.READ_PHONE_STATE);
if(permission != PackageManager.PERMISSION_GRANTED) {
    // ask permission here
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.READ_PHONE_STATE}, 101);
} else {
    // do your work here
}

上述代码应采用onCreate活动方法。

并检查用户是否已在onRequestPermissionsResult活动方法

中授予了权限

@Override
public void onRequestPermissionsResult(int requestCode,
                                       String permissions[], int[] grantResults) {
    if (requestCode == 101) {
        if (grantResults.length > 0
                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

            // permission was granted, yay! Do the
            // IMEI Getting task here

        } else {
             // permission denied,
             //  don't do the functionality that depends on this permission.
        }
    }
}

希望这会有所帮助。

来自this

的参考资料

关于获取IMEI没有使用android，有以下错误

1 个答案: