我有这样的错误日志，实际上我试着在其他xml中显示DrawableToggle，但问题是这样的，并且错误日志也显示在帖子中
我已经在acitivity main及其显示切换栏中显示了导航栏的一些活动
但是当我尝试在另一个xml中实现时，切换栏不显示
manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.felix.tgp" >
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_icon"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme"
android:name="com.felix.tgp.AppController">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Calculator"
android:label="Body Mass Index Calculator"
android:theme="@style/AppTheme.NoActionBar"
android:screenOrientation="portrait">
</activity>
<activity
android:name="com.felix.tgp.MainList"
android:label="Chest Workout"
android:screenOrientation="portrait">
</activity>
</application>
</manifest>
style.xml
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#FF39A3EB</item>
<item name="colorPrimaryDark">#FF185896</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
android:layout_width="match_parent" android:layout_height="match_parent"
android:fitsSystemWindows="true" tools:openDrawer="start">
<include layout="@layout/app_bar_main" android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView android:id="@+id/nav_view"
android:layout_width="wrap_content" android:layout_height="match_parent"
android:layout_gravity="start" android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main" app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
calculator.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
android:layout_width="match_parent" android:layout_height="match_parent"
android:fitsSystemWindows="true" tools:openDrawer="start">
<android.support.design.widget.NavigationView android:id="@+id/nav_view"
android:layout_width="wrap_content" android:layout_height="match_parent"
android:layout_gravity="start" android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main" app:menu="@menu/activity_main_drawer" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center_horizontal">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/Title"
android:layout_weight="0.75"
android:layout_x="0dp"
android:layout_y="22dp"
android:text="BMI Calculator"
android:textColor="#000000"
android:textSize="50dp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Height"
android:id="@+id/TextView"
android:textColor="#000000"
android:textSize="30dp" />
<EditText
android:layout_width="158dp"
android:layout_height="wrap_content"
android:inputType="number"
android:id="@+id/height"
android:hint="cm"
android:textColor="#000000"
android:textStyle="bold"
android:textSize="30dp"
android:textAlignment="center"
android:textColorHint="#898484" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Weight"
android:id="@+id/textView1"
android:layout_x="77dp"
android:layout_y="168dp"
android:textColor="#000000"
android:textSize="30dp" />
<EditText
android:layout_width="158dp"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/weight"
android:layout_x="183dp"
android:layout_y="154dp"
android:hint="Kg"
android:textColor="#000000"
android:textStyle="bold"
android:textSize="30dp"
android:textAlignment="center"
android:textColorHint="#898484" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:layout_width="147dp"
android:layout_height="68dp"
android:text="Calculate"
android:id="@+id/hitung"
android:textSize="20dp" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="158dp"
android:layout_height="wrap_content"
android:inputType="number"
android:ems="10"
android:id="@+id/result"
android:hint="Result"
android:textColor="#000000"
android:textStyle="bold"
android:textSize="30dp"
android:textAlignment="center"
android:textColorHint="#898484" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:ems="10"
android:id="@+id/finalresult"
android:textColor="#000000"
android:textSize="18dp"
android:textColorHint="#898484"
android:scrollbars = "vertical"/>
</LinearLayout>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
MainActivity.java
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} 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.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);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_calculator) {
// Handle the camera action
Intent calculator = new Intent(MainActivity.this, Calculator.class);
startActivity(calculator);
} else if (id == R.id.nav_chest) {
Intent List = new Intent(MainActivity.this, MainList.class);
startActivity(List);
} else if (id == R.id.nav_back) {
} else if (id == R.id.nav_shoulder) {
} else if (id == R.id.nav_arm) {
} else if (id == R.id.nav_abdominal) {
} else if (id == R.id.nav_leg) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
calculator.java
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.method.ScrollingMovementMethod;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
/**
* Created by Felix on 3/2/2016.
*/
public class Calculator extends AppCompatActivity implements View.OnClickListener, NavigationView.OnNavigationItemSelectedListener{
private Button hitung;
private TextView result, finalresult;
private EditText height,weight;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.calculator);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
hitung = (Button)findViewById(R.id.hitung);
height = (EditText)findViewById(R.id.height);
weight = (EditText)findViewById(R.id.weight);
result = (TextView)findViewById(R.id.result);
finalresult = (TextView)findViewById(R.id.finalresult);
finalresult.setMovementMethod(new ScrollingMovementMethod());
hitung.setOnClickListener(this);
}
@Override
public void onClick(View v) {
String tinggi = height.getText().toString();
String berat = weight.getText().toString();
double hasilakhir = Double.parseDouble(berat)/((Double.parseDouble(tinggi)*0.01)*(Double.parseDouble(tinggi)*0.01));
result.setText(String.format("%.2f", hasilakhir));
String bmiindex = "Keterangan BMI\n" +
"BMI < 18.5 = Berat Badan Anda dibawah rata-rata (underweight)\n" +
"BMI 18.5 - 24 = Berat Badan Anda normal\n" +
"BMI 25 - 29 = Kelebihan Berat Badan (overweight)\n" +
"BMI >30 = Anda Tergolong Obesitas";
if(hasilakhir < 18.5 ){
finalresult.setText("Berat Badan Anda dibawah rata-rata (underweight)\n"+"\n" +bmiindex);
}
else if(hasilakhir >=18.5 && hasilakhir <=24.99) {
finalresult.setText("Berat Badan Anda normal\n"+"\n" +bmiindex);
}
else if(hasilakhir >=25 && hasilakhir <=29.99) {
finalresult.setText("Kelebihan Berat Badan (overweight)\n"+"\n" +bmiindex);
}
else if(hasilakhir >=30){
finalresult.setText("Anda Tergolong Obesitas\n"+"\n" +bmiindex);
}
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} 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.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);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_calculator) {
// Handle the camera action
Intent calculator = new Intent(Calculator.this, Calculator.class);
startActivity(calculator);
} else if (id == R.id.nav_chest) {
} else if (id == R.id.nav_back) {
} else if (id == R.id.nav_shoulder) {
} else if (id == R.id.nav_arm) {
} else if (id == R.id.nav_abdominal) {
} else if (id == R.id.nav_leg) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
记录错误
FATAL EXCEPTION: main
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: Process: com.felix.tgp, PID: 2255
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.felix.tgp/com.felix.tgp.Calculator}: java.lang.NullPointerException
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.access$800(ActivityThread.java:135)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.os.Looper.loop(Looper.java:136)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5017)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:515)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: Caused by: java.lang.NullPointerException
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.support.v7.internal.widget.ToolbarWidgetWrapper.<init>(ToolbarWidgetWrapper.java:100)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.support.v7.internal.widget.ToolbarWidgetWrapper.<init>(ToolbarWidgetWrapper.java:93)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.support.v7.internal.app.ToolbarActionBar.<init>(ToolbarActionBar.java:78)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:206)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:99)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at com.felix.tgp.Calculator.onCreate(Calculator.java:39)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:5231)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.access$800(ActivityThread.java:135)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.os.Looper.loop(Looper.java:136)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5017)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:515)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
04-20 12:37:30.940 2255-2255/com.felix.tgp E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
04-20 12:37:32.180 2255-2255/? I/Process: Sending signal. PID: 2255 SIG: 9
答案 0 :(得分：0)
请选择没有操作栏功能的主题，您的主题如下，
如果你有像android:theme="@style/Theme.AppCompat.Light.DarkActionBar"这样的主题
替换为android:theme="@style/Theme.AppCompat.Light.NoActionBar"
可能是你用来改变它。
答案 1 :(得分：0)
好的，请尝试以下操作，让我知道会发生什么。
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>