Question

我的应用程序安装在相对较新的运行Oreo 8.0的华为上时，能够顺利启动和运行该应用程序。该应用程序还可以在运行Lollipop的Nexus模拟器上正常运行。但是，在运行KitKat 4.4的另一部手机上，该应用在启动时崩溃。

我认为在添加默认的NavigationDrawerActivity时出现了问题。

09-05 14：05：57.285 30968-30968 /？ E / AndroidRuntime：致命异常：主要流程：com.example.a_phi.myapplication，PID：30968 java.lang.RuntimeException：无法启动活动ComponentInfo {com.example.a_phi.myapplication / com.example.a_phi.myapplication.LoginActivity}： android.view.InflateException：二进制XML文件第2行：错误充气课在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2264）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2313）在android.app.ActivityThread.access $ 1100（ActivityThread.java:141）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1238）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:136）在android.app.ActivityThread.main（ActivityThread.java:5333）在java.lang.reflect.Method.invokeNative（本机方法）在java.lang.reflect.Method.invoke（Method.java:515）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:895）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:711）在dalvik.system.NativeStart.main（本机方法）原因：android.view.InflateException：二进制XML文件第2行：膨胀类错误在android.view.LayoutInflater.createView（LayoutInflater.java:620）在com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView（PhoneLayoutInflater.java:56）在android.view.LayoutInflater.onCreateView（LayoutInflater.java:669）在android.view.LayoutInflater.createViewFromTag（LayoutInflater.java:694）在android.view.LayoutInflater.inflate（LayoutInflater.java:469）在android.view.LayoutInflater.inflate（LayoutInflater.java:397）在android.view.LayoutInflater.inflate（LayoutInflater.java:353）在com.android.internal.policy.impl.PhoneWindow.setContentView（PhoneWindow.java:290）在android.app.Activity.setContentView（Activity.java:1958）在com.example.a_phi.myapplication.LoginActivity.onCreate（LoginActivity.java:44）在android.app.Activity.performCreate（Activity.java:5340）在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1087）在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2228）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2313）在android.app.ActivityThread.access $ 1100（ActivityThread.java:141）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1238）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:136）在android.app.ActivityThread.main（ActivityThread.java:5333）在java.lang.reflect.Method.invokeNative（本机方法）在java.lang.reflect.Method.invoke（Method.java:515）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:895）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:711）在dalvik.system.NativeStart.main（本机方法）造成原因：java.lang.reflect.InvocationTargetException 在java.lang.reflect.Constructor.constructNative（本机方法）在java.lang.reflect.Constructor.newInstance（Constructor.java:423）在android.view.LayoutInflater.createView（LayoutInflater.java:594）在com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView（PhoneLayoutInflater.java:56）在android.view.LayoutInflater.onCreateView（LayoutInflater.java:669）在android.view.LayoutInflater.createViewFromTag（LayoutInflater.java:694）在android.view.LayoutInflater.inflate（LayoutInflater.java:469）在android.view.LayoutInflater.inflate（LayoutInflater.java:397）在android.view.LayoutInflater.inflate（LayoutInflater.java:353）在com.android.internal.policy.impl.PhoneWindow.setContentView（PhoneWindow.java:290）在android.app.Activity.setContentView（Activity.java:1958）在com.example.a_phi.myapplication.LoginActivity.onCreate（LoginActivity.java:44）在android.app.Activity.performCreate（Activity.java:5340）在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1087）在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2228）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2313）在android.app.ActivityThread.access $ 1100（ActivityThread.java:141）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1238）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:136）在android.app.ActivityThread.main（ActivityThread.java:5333）在java.lang.reflect.Method.invokeNative（本机方法）在java.lang.reflect.Method.invoke（Method.java:515）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:895）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:711）在dalvik.system.NativeStart.main（本机方法）造成原因：java.lang.NullPointerException 在com.huawei.android.content.res.ResourcesEx.getThemeDrawable（ResourcesEx.java:655）在com.huawei.android.content.res.ResourcesEx.loadDrawable（ResourcesEx.java:623）在android.content.res.TypedArray.getDrawable（TypedArray.java:616）在android.view.View。（View.java:3573）在android.view.ViewGroup。（ViewGroup.java:470）在android.widget.LinearLayout。（LinearLayout.java:179）在android.widget.LinearLayout。（LinearLayout.java:175）在java.lang.reflect.Constructor.constructNative（本机方法）在java.lang.reflect.Constructor.newInstance（Constructor.java:423）在android.view.LayoutInflater.createView（LayoutInflater.java:594）在com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView（PhoneLayoutInflater.java:56）在android.view.LayoutInflater.onCreateView（LayoutInflater.java:669）在android.view.LayoutInflater.createViewFromTag（LayoutInflater.java:694）在android.view.LayoutInflater.inflate（LayoutInflater.java:469）在android.view.LayoutInflater.inflate（LayoutInflater.java:397）在android.view.LayoutInflater.inflate（LayoutInflater.java:353）在com.android.internal.policy.impl.PhoneWindow.setContentView（PhoneWindow.java:290）在android.app.Activity.setContentView（Activity.java:1958）在com.example.a_phi.myapplication.LoginActivity.onCreate（LoginActivity.java:44）在android.app.Activity.performCreate（Activity.java:5340）在android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1087）在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2228）在android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2313）在android.app.ActivityThread.access $ 1100（ActivityThread.java:141）在android.app.ActivityThread $ H.handleMessage（ActivityThread.java:1238）在android.os.Handler.dispatchMessage（Handler.java:102）在android.os.Looper.loop（Looper.java:136）在android.app.ActivityThread.main（ActivityThread.java:5333）在java.lang.reflect.Method.invokeNative（本机方法）在java.lang.reflect.Method.invoke（Method.java:515）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:895）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:711）在dalvik.system.NativeStart.main（本机方法）

LoginActvity

public class LoginActivity extends Activity {


    private UserLoginTask mAuthTask = null;

    // UI references.
    private EditText mEmailView;
    private EditText mPasswordView;
    private TextView mRegistrationScreen;
    private View mProgressView;
    private View mLoginFormView;
    public String id;

    @Override
    @TargetApi(19)
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);

        setContentView(R.layout.activity_login_registration);
        // Set up the login form.
        mEmailView = (EditText) findViewById(R.id.email);
        mPasswordView = (EditText) findViewById(R.id.password);

        Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);

        mLoginFormView = findViewById(R.id.login_form);
        mProgressView = findViewById(R.id.login_progress);
        mRegistrationScreen = findViewById(R.id.registerLink);
        mEmailSignInButton.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                String emailAddress = mEmailView.getText().toString().trim();
                String password = mPasswordView.getText().toString().trim();
                UserLoginTask callDOIB = new UserLoginTask();
                try {
                    String loginSuccessFail = callDOIB.execute(emailAddress, password).get();
                    try {
                        JSONObject jsonObject = new JSONObject(loginSuccessFail);
                        id = jsonObject.getString("id");
                        //JSONObject id = jArray.getJSONObject(0);
                        System.out.println("json object at LoginActivity id is "+id);
                        authoriseLogin(loginSuccessFail, id);
                    }catch (JSONException e){
                        e.printStackTrace();
                    }

                }catch(InterruptedException e){
                    e.printStackTrace();
                }
                catch (ExecutionException e){
                    e.printStackTrace();
                }
            }
        });

        mRegistrationScreen.setOnClickListener(new OnClickListener(){
            public void onClick(View v){
                Intent loadRegistration = new Intent(LoginActivity.this, RegisterActivity.class);
                startActivity(loadRegistration);
            }
        });
    }






    public void authoriseLogin(String authorise, String id){
        if (authorise.contains("id")) {
            System.out.println(" accessLRA.authoriseLogin login has been called");
            Session session = new Session(getApplicationContext());
            session.setId(id);
            Intent loadPersonal = new Intent(LoginActivity.this, MainActivity.class);
            startActivity(loadPersonal);

            System.out.println("Login has been authorised");
        }
        else{
            System.out.println("Incorrect username or password");
        }
    }





    }

使用setContentView()加载布局文件时，这给了我一个膨胀的异常

java.lang.RuntimeException：无法启动活动 ComponentInfo {com.example.a_phi.myapplication / com.example.a_phi.myapplication.LoginActivity}： android.view.InflateException：二进制XML文件第2行：错误膨胀类

Answer 1

正如评论部分所建议的，实际上我确实缺少一些其他的-v21文件夹，这些文件夹支持Android KitKat的API级别21。由于某种原因，我没有将它们移到我的新项目中。现在正在运行，谢谢。

Android应用程序似乎在KitKat 4.4上启动时崩溃了。

1 个答案: