My Android app stops at opening

Question

My Android app stops at opening, but Android studio shows no error. Can somebody help please? I'm trying to convert my website into an android app. I'm a little new at this.

Below is a display of my MainActivity.java code

package com.example.deedat.webtry2;

import android.os.Bundle;
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.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class MainActivity extends AppCompatActivity {

    private WebView myWebView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        WebSettings webSettings = myWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        myWebView = (WebView)findViewById(R.id.webView);
        myWebView.loadUrl("http://www.motivationalscholar.com");
        myWebView.setWebViewClient(new WebViewClient());


    }

    @Override
    public void onBackPressed() {
        if(myWebView.canGoBack()){
            myWebView.goBack();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

This is my activity_main.xml code

    <?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.deedat.webtry2.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        app:srcCompat="@android:drawable/ic_dialog_email" />

</android.support.design.widget.CoordinatorLayout>

My Logcat shows this:

01-10 19:26:15.552 17316-17316/? I/zygote: Not late-enabling -Xcheck:jni (already on) 01-10 19:26:15.562 17316-17316/? W/zygote: Unexpected CPU variant for X86 using defaults: x86 01-10 19:26:15.793 17316-17316/com.example.deedat.webtry2 I/InstantRun: starting instant run server: is main process 01-10 19:26:15.929 17316-17316/com.example.deedat.webtry2 D/AndroidRuntime: Shutting down VM 01-10 19:26:15.932 17316-17316/com.example.deedat.webtry2 E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.deedat.webtry2, PID: 17316 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.deedat.webtry2/com.example.deedat.webtry2.MainActivity}: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class uses-permission at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) Caused by: android.view.InflateException: Binary XML file line #0: Binary XML file line #0: Error inflating class uses-permission Caused by: android.view.InflateException: Binary XML file line #0: Error inflating class uses-permission Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.uses-permission" on path: DexPathList[[zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/base.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.deedat.webtry2-qFM_P6edDm6em-M-SNtV1g==/lib/x86, /system/lib, /system/vendor/lib]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:93) at java.lang.ClassLoader.loadClass(ClassLoader.java:379) at java.lang.ClassLoader.loadClass(ClassLoader.java:312) at android.view.LayoutInflater.createView(LayoutInflater.java:606) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:703) at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:68) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:720) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) at android.view.LayoutInflater.rInflate(LayoutInflater.java:863) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:995) at android.view.LayoutInflater.rInflate(LayoutInflater.java:859) at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824) at android.view.LayoutInflater.inflate(LayoutInflater.java:515) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at android.view.LayoutInflater.inflate(LayoutInflater.java:374) at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 01-10 19:26:15.933 17316-17316/com.example.deedat.webtry2 E/AndroidRuntime: at com.example.deedat.webtry2.MainActivity.onCreate(MainActivity.java:22) at android.app.Activity.performCreate(Activity.java:6975) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892) at android.app.ActivityThread.-wrap11(Unknown Source:0) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593) at android.os.Handler.dispatchMessage(Handler.java:105) at android.os.Looper.loop(Looper.java:164) at android.app.ActivityThread.main(ActivityThread.java:6541) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

My Android app stops at opening, but Android studio shows no error. Can somebody help please? I'm trying to convert my website into an android app. I'm a little new at this.

While debugging which portion of the code throws exception or causes the application to crash. Can you share those information. — Soumya, Jan 10 '18 at 23:24
duplicate of https://stackoverflow.com/questions/45393141/android-studio-logcat — msangel, Jan 11 '18 at 01:14

score 0 · Answer 1 · answered Jan 10 '18 at 22:50

Your onCreate() method starts like this:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    WebSettings webSettings = myWebView.getSettings();
    ...
}

myWebView.getSettings() is almost certainly throwing a NullPointerException, as you have never initialized myWebView. Add this line just after setContentView():

myWebView = (WebView) findViewById(R.id.webView);

Thanks Ben, I did that and still having the same problem. Are there any other ways? — Gifer, Jan 10 '18 at 23:07

My Android app stops at opening

1 Answers1