我遇到了麻烦，这段代码无效 我认为我的错误是在类中，它具有类check1a4中的和的函数。它应该是一个片段＆＃39;？
我尝试在一些教程中搜索，但我找不到解决方案。
MainActivity
<div class="image-container"
style="background-image: url(https://lorempixel.com/400/200/cats/1/)"
></div>
<br>
<div class="image-container"
style="background-image: url(https://lorempixel.com/200/400/cats/1/)"
></div>}
** java **
package com.journaldev.navigationdrawer;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class MainActivity extends AppCompatActivity {
private String[] mNavigationDrawerItemTitles;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
Toolbar toolbar;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
android.support.v7.app.ActionBarDrawerToggle mDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mNavigationDrawerItemTitles= getResources().getStringArray(R.array.navigation_drawer_items_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
setupToolbar();
DataModel[] drawerItem = new DataModel[3];
drawerItem[0] = new DataModel(R.drawable.connect, "Check List (1 a 4)");
drawerItem[1] = new DataModel(R.drawable.fixtures, "Check List (1 a 19)");
drawerItem[2] = new DataModel(R.drawable.table, "Sobre a sove");
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
getSupportActionBar().setHomeButtonEnabled(true);
DrawerItemCustomAdapter adapter = new DrawerItemCustomAdapter(this, R.layout.list_view_item_row, drawerItem);
mDrawerList.setAdapter(adapter);
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerLayout.setDrawerListener(mDrawerToggle);
setupDrawerToggle();
}
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
fragment = new ConnectFragment();
break;
case 1:
fragment = new FixturesFragment();
break;
case 2:
fragment = new TableFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(mNavigationDrawerItemTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
Log.e("MainActivity", "Error in creating fragment");
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mDrawerToggle.syncState();
}
void setupToolbar(){
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
void setupDrawerToggle(){
mDrawerToggle = new android.support.v7.app.ActionBarDrawerToggle(this,mDrawerLayout,toolbar,R.string.app_name, R.string.app_name);
//This is necessary to change the icon of the Drawer Toggle upon state change.
mDrawerToggle.syncState();
}
R.layout.check1a
package com.journaldev.navigationdrawer;
import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.app.Activity;
import android.os.Bundle;
import android.app.AlertDialog;
import android.widget.*;
import android.view.*;
public class check1a4 extends Activity {
/** Called when the activity is first created. */
CheckBox a,s,d,f,g,h,j,k,q,w,e,rr,t,y,u,i,z,x,c,v,b,n,m, aa,ss,dd,ff;
EditText resultado;
EditText hh,jj,kk,fr,qq,ww,ee;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.check1a4);
a = (CheckBox) findViewById(R.id.a);
s = (CheckBox) findViewById(R.id.s);
d = (CheckBox) findViewById(R.id.d);
f = (CheckBox) findViewById(R.id.f);
g = (CheckBox) findViewById(R.id.g);
h = (CheckBox) findViewById(R.id.h);
j = (CheckBox) findViewById(R.id.j);
k = (CheckBox) findViewById(R.id.k);
q = (CheckBox) findViewById(R.id.q);
w = (CheckBox) findViewById(R.id.w);
e = (CheckBox) findViewById(R.id.e);
t = (CheckBox) findViewById(R.id.t);
y = (CheckBox) findViewById(R.id.y);
u = (CheckBox) findViewById(R.id.u);
i = (CheckBox) findViewById(R.id.i);
z = (CheckBox) findViewById(R.id.z);
x = (CheckBox) findViewById(R.id.x);
c = (CheckBox) findViewById(R.id.c);
v = (CheckBox) findViewById(R.id.v);
b = (CheckBox) findViewById(R.id.b);
n = (CheckBox) findViewById(R.id.n);
m = (CheckBox) findViewById(R.id.m);
rr = (CheckBox) findViewById(R.id.rr);
aa = (CheckBox) findViewById(R.id.aa);
ss = (CheckBox) findViewById(R.id.ss);
dd = (CheckBox) findViewById(R.id.dd);
ff = (CheckBox) findViewById(R.id.ff);
resultado = (EditText) findViewById(R.id.total);
hh = (EditText) findViewById(R.id.hh);
jj = (EditText) findViewById(R.id.jj);
kk = (EditText) findViewById(R.id.kk);
fr = (EditText) findViewById(R.id.fr);
qq = (EditText) findViewById(R.id.qq);
ww = (EditText) findViewById(R.id.ww);
ee = (EditText) findViewById(R.id.ee);
Button bttotal = (Button) findViewById(R.id.btsomar);
bttotal.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
double total = 0;
if (a.isChecked()) {
total += 10.0;
}
if (s.isChecked()) {
total += 5.00;
}
if (d.isChecked()) {
total += 5.00;
}
if (f.isChecked()) {
total += 4.00;
}
if (g.isChecked()) {
total += 1.00;
}
if (h.isChecked()) {
total += 1.00;
}
if (j.isChecked()) {
total += 1.00;
}
if (k.isChecked()) {
total += 2.00;
}
if (q.isChecked()) {
total += 1.00;
}
if (w.isChecked()) {
total += 2.00;
}
if (e.isChecked()) {
total += 2.00;
}
if (rr.isChecked()) {
total += 1.00;
}
if (t.isChecked()) {
total += 3.50;
}
if (y.isChecked()) {
total += 3.50;
}
if (u.isChecked()) {
total += 1.00;
}
if (z.isChecked()) {
total += 4.50;
}
if (x.isChecked()) {
total += 6.00;
}
if (c.isChecked()) {
total += 4.50;
}
if (v.isChecked()) {
total += 1.00;
}
if (b.isChecked()) {
total += 1.00;
}
if (z.isChecked()) {
total += 4.50;
}
if (n.isChecked()) {
total += 6.00;
}
if (m.isChecked()) {
total += 4.00;
}
if (aa.isChecked()) {
total += 1.50;
}
if (ss.isChecked()) {
total += 2.00;
}
if (dd.isChecked()) {
total += 2.50;
}
if (ff.isChecked()) {
total += 2.00;
}
double num1 = Double.parseDouble(hh.getText().toString());
double num2 = Double.parseDouble(jj.getText().toString());
double num3 = Double.parseDouble(kk.getText().toString());
double num4 = Double.parseDouble(qq.getText().toString());
double num5 = Double.parseDouble(ww.getText().toString());
double num6 = Double.parseDouble(ee.getText().toString());
double num7 = Double.parseDouble(fr.getText().toString());
////
resultado.setText(String.valueOf(num1+num2+num3+num4+num5+num6+num7+total));
}
});
}}