通过单击导航抽屉上的项目打开虚假活动
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【中文标题】通过单击导航抽屉上的项目打开虚假活动【英文标题】：False Activity opens by clicking on an Item on the Navigation drawer 【发布时间】：2017-12-30 13:46:07 【问题描述】：我编写了一个测验应用程序。我还有一个导航抽屉，其中包含以下项目：主页、统计信息和关于。第一个活动/主要活动 (quizActivity) 具有主页项，第二个活动 (menu2) 具有统计项。 Menu3 有关于项目。现在我已经在导航抽屉的 Menu2 中通过单击项目 home 进行了设置 --> QuizActivity 将打开。现在我还想，当我单击关于按钮时，Menu3 将打开。但不是Menu3，而是我在打开之前使用的最近的应用程序/它会打开应用程序的最近页面，例如测验活动。我有什么错？我还检查了其他类似的线程，但找不到帮助。
菜单2 Java：
public class Menu2 extends AppCompatActivity
private DrawerLayout mDrawerLayout2;
private ActionBarDrawerToggle mToggle;
private Toolbar mToolbar;
private Button popup;
private Button popup2;
private Button popup3;
private PopupWindow popupWindow;private LayoutInflater layoutInflater; //Alows to add a new layout in our window
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu2);
TextView txtScore = (TextView) findViewById(R.id.textScore2);
TextView txtHighScore = (TextView) findViewById(R.id.textHighScore);
ImageView imgTrophyView1 = (ImageView) findViewById(R.id.trophy1);
ImageView imgTrophyView2 = (ImageView) findViewById(R.id.trophy2);
Button bttPOPUP = (Button) findViewById(R.id.enablePOPUP);
Button bttPOPUP2 =(Button)findViewById(R.id.enablePOPUP2);
Button bttPOPUP3 = (Button) findViewById(R.id.enablePOPUP3);
ImageView imgTrophyView3=(ImageView)findViewById(R.id.trophy3);
Intent intent = getIntent();
int mScore = intent.getIntExtra("score", 0);
txtScore.setText("Your score is: " + mScore);
SharedPreferences mypref = getPreferences(MODE_PRIVATE);
int highScore = mypref.getInt("highScore", 0);
if (highScore >= mScore)
txtHighScore.setText("High score: " + highScore);
if (highScore >= 10)
imgTrophyView1.setVisibility(View.VISIBLE);
bttPOPUP.setVisibility(View.VISIBLE);
if (highScore >= 20)
imgTrophyView2.setVisibility(View.VISIBLE);
bttPOPUP2.setVisibility(View.VISIBLE);
if (highScore >= 30)
imgTrophyView3.setVisibility(View.VISIBLE);
bttPOPUP3.setVisibility(View.VISIBLE);
else
txtHighScore.setText("New highscore: " + mScore);
SharedPreferences.Editor editor = mypref.edit();
editor.putInt("highScore", mScore);
editor.commit();
//Start POPUP window 1
popup = (Button)findViewById(R.id.enablePOPUP);
popup.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
layoutInflater =(LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup container = (ViewGroup)layoutInflater.inflate(R.layout.popup_menu2_1,null);
popupWindow = new PopupWindow(container,1000,980,true); //400,400=popUp size, true = makes that we can close the pop up by simply click out of the window
popupWindow.showAtLocation(mDrawerLayout2, Gravity.CENTER, 0, 0);
mDrawerLayout2.setAlpha((float) 0.3);
container.setOnTouchListener(new View.OnTouchListener()
@Override
public boolean onTouch(View view, MotionEvent motionEvent )
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
return true;
);
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener()
@Override
public void onDismiss()
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
);
);
//End POPUP window 1
//start POPUP window 2
popup2 = (Button)findViewById(R.id.enablePOPUP2);
popup2.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
layoutInflater =(LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup container = (ViewGroup)layoutInflater.inflate(R.layout.popup_menu2_2,null);
popupWindow = new PopupWindow(container,1000,980,true); //400,400=popUp size, true = makes that we can close the pop up by simply click out of the window
popupWindow.showAtLocation(mDrawerLayout2, Gravity.CENTER, 0, 0);
mDrawerLayout2.setAlpha((float) 0.3);
container.setOnTouchListener(new View.OnTouchListener()
@Override
public boolean onTouch(View view, MotionEvent motionEvent )
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
return true;
);
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener()
@Override
public void onDismiss()
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
);
);
//End POPUP window 2
//start POPUP window 3
popup3 = (Button)findViewById(R.id.enablePOPUP3);
popup3.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
layoutInflater =(LayoutInflater) getApplicationContext().getSystemService(LAYOUT_INFLATER_SERVICE);
ViewGroup container = (ViewGroup)layoutInflater.inflate(R.layout.popup_menu2_3,null);
popupWindow = new PopupWindow(container,1000,980,true); //400,400=popUp size, true = makes that we can close the pop up by simply click out of the window
popupWindow.showAtLocation(mDrawerLayout2, Gravity.CENTER, 0, 0);
mDrawerLayout2.setAlpha((float) 0.3);
container.setOnTouchListener(new View.OnTouchListener()
@Override
public boolean onTouch(View view, MotionEvent motionEvent )
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
return true;
);
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener()
@Override
public void onDismiss()
mDrawerLayout2.setAlpha((float) 1);
popupWindow.dismiss();
);
);
//End POPUP window 3
mToolbar = (Toolbar)findViewById(R.id.nav_action);
setSupportActionBar(mToolbar);
mDrawerLayout2 = (DrawerLayout) findViewById(R.id.drawerLayout2);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout2, R.string.open, R.string.close);
mDrawerLayout2.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
NavigationView mNavigationView = (NavigationView) findViewById(nv2);
mNavigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener()
@Override
public boolean onNavigationItemSelected(MenuItem menuItem)
int id = menuItem.getItemId();
Intent i;
if (id == R.id.nav_home2)
// Handle the home action
i = new Intent(Menu2.this, QuizActivity.class);
startActivity(i);
else if (id == R.id.nav_about2)
i = new Intent(Menu2.this, Menu3.class);
startActivity(i);
return true;
);
@Override //Makes that the "Burger" Item, shows the Drawer if someone clicks on the simbol
public boolean onOptionsItemSelected(MenuItem item)
if (mToggle.onOptionsItemSelected(item))
return true;
return super.onOptionsItemSelected(item);
导航菜单：
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/nav_home2"
android:title="Home"
android:icon="@mipmap/ic_home_black_24dp"/>
<item android:id="@+id/nav_stats2"
android:title="Stats"
android:icon="@mipmap/ic_person_black_24dp"
android:checked="true"/>
<item android:id="@+id/nav_about2"
android:title="About"
android:icon="@mipmap/ic_info_outline_black_24dp"/>
</menu>
菜单 2 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:layout_
android:layout_
tools:context="amapps.impossiblequiz.Menu2"
android:id="@+id/drawerLayout2"
android:orientation="vertical">
<LinearLayout
android:layout_
android:layout_
android:orientation="vertical">
<include
layout="@layout/navigation_action"
android:layout_
android:layout_ />
<RelativeLayout
android:layout_
android:layout_>
<TextView
android:id="@+id/textScore2"
android:layout_
android:layout_
android:background="#f60"
android:paddingTop="10dp"
android:paddingLeft="35dp"
android:text="Your score is:"
android:textAppearance="@style/TextAppearance.AppCompat"
android:textColor="#ffffff"
android:textSize="20dp"
android:layout_marginTop="28dp"
android:layout_below="@+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<TextView
android:id="@+id/textHighScore"
android:layout_
android:layout_
android:background="#FFAB00"
android:paddingLeft="35dp"
android:paddingRight="100dp"
android:paddingTop="10dp"
android:text="Highest score:"
android:textAppearance="@style/TextAppearance.AppCompat"
android:textColor="#ffffff"
android:textSize="20dp"
android:layout_marginTop="13dp"
android:layout_below="@+id/textScore2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:id="@+id/tryAgain_button"
android:layout_
android:layout_
android:background="@drawable/bg_pill"
android:onClick="onClick"
android:text="Restart Quiz!"
android:textColor="#ffffff"
android:layout_marginTop="18dp"
android:layout_below="@+id/textHighScore"
android:layout_centerHorizontal="true" />
<TextView
android:id="@+id/textView2"
android:layout_
android:layout_
android:layout_marginTop="33dp"
android:text="Stats: play and get trophies!"
android:textAppearance="@style/TextAppearance.AppCompat.Button"
android:textSize="20dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<ImageView
android:id="@+id/statsTrophy"
app:srcCompat="@drawable/statsoftrophy"
android:layout_
android:layout_
android:layout_alignTop="@+id/textHighScore"
android:layout_above="@+id/tryAgain_button"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<ImageView
android:id="@+id/trophy1"
android:layout_
android:layout_
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/tryAgain_button"
android:layout_marginLeft="26dp"
android:layout_marginStart="26dp"
android:layout_marginTop="70dp"
android:visibility="invisible"
app:srcCompat="@drawable/trophy1" />
<ImageView
android:id="@+id/trophy2"
android:layout_
android:layout_
android:layout_alignTop="@+id/trophy1"
android:layout_marginLeft="24dp"
android:layout_marginStart="24dp"
android:layout_toEndOf="@+id/trophy1"
android:layout_toRightOf="@+id/trophy1"
android:visibility="invisible"
app:srcCompat="@drawable/trophy2" />
<Button
android:id="@+id/enablePOPUP"
android:layout_
android:layout_
android:text="Info"
android:alpha="0.30"
android:visibility="invisible"
android:background="@drawable/bg_pill_trophy"
android:textColor="#ffffff"
android:layout_alignTop="@+id/enablePOPUP2"
android:layout_alignLeft="@+id/trophy1"
android:layout_alignStart="@+id/trophy1" />
<Button
android:id="@+id/enablePOPUP2"
android:layout_
android:layout_
android:background="@drawable/bg_pill_trophy"
android:text="Info"
android:textColor="#ffffff"
android:alpha="0.30"
android:visibility="invisible"
android:layout_marginTop="12dp"
android:layout_below="@+id/trophy2"
android:layout_alignLeft="@+id/trophy2"
android:layout_alignStart="@+id/trophy2"
android:layout_alignRight="@+id/trophy2"
android:layout_alignEnd="@+id/trophy2" />
<ImageView
android:id="@+id/trophy3"
android:layout_
android:layout_
android:layout_alignTop="@+id/trophy2"
android:layout_toLeftOf="@+id/statsTrophy"
android:layout_toStartOf="@+id/statsTrophy"
app:srcCompat="@drawable/trophy3"
android:visibility="invisible"/>
<Button
android:id="@+id/enablePOPUP3"
android:layout_
android:layout_
android:background="@drawable/bg_pill_trophy"
android:text="Info"
android:textColor="#ffffff"
android:alpha="0.30"
android:visibility="invisible"
android:layout_alignBottom="@+id/enablePOPUP2"
android:layout_alignLeft="@+id/trophy3"
android:layout_alignStart="@+id/trophy3"
android:layout_alignTop="@+id/enablePOPUP2"
android:layout_alignRight="@+id/trophy3"
android:layout_alignEnd="@+id/trophy3" />
</RelativeLayout>
</LinearLayout>
<android.support.design.widget.NavigationView
android:layout_
android:layout_
app:menu="@menu/navigation_menu2"
android:layout_gravity="start"
android:id="@+id/nv2"
app:headerLayout="@layout/navigation_header"
app:itemIconTint="@drawable/tint_color_selector2">
</android.support.design.widget.NavigationView>
菜单3 Java：
public class Menu3 extends AppCompatActivity
private DrawerLayout mDrawerLayout3;
private ActionBarDrawerToggle mToggle;
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu3);
Toolbar mToolbar = (Toolbar) findViewById(R.id.nav_action);
setSupportActionBar(mToolbar);
mDrawerLayout3 = (DrawerLayout) findViewById(R.id.drawerLayout);
mToggle = new ActionBarDrawerToggle(this, mDrawerLayout3, R.string.open,
R.string.close);
mDrawerLayout3.addDrawerListener(mToggle);
mToggle.syncState();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
NavigationView mNavigationView = (NavigationView) findViewById(nv3);
mNavigationView.setNavigationItemSelectedListener(new
NavigationView.OnNavigationItemSelectedListener()
@Override
public boolean onNavigationItemSelected(MenuItem menuItem)
switch (menuItem.getItemId())
case(R.id.nav_home3):
Intent accountActivity3 = new
Intent(getApplicationContext(),QuizActivity.class);
startActivity(accountActivity3);
return true;
);
public void onClick(View view)
Intent intent = new Intent(Menu3.this, QuizActivity.class);
startActivity(intent);
@Override //Makes that the "Burger" Item, shows the Drawer if someone clicks on the simbol
public boolean onOptionsItemSelected(MenuItem item)
if (mToggle.onOptionsItemSelected(item))
return true;
return super.onOptionsItemSelected(item);
菜单 3 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:layout_
android:layout_
tools:context="amapps.impossiblequiz.Menu3"
android:id="@+id/drawerLayout3">
<android.support.design.widget.NavigationView
android:layout_
android:layout_
app:menu="@menu/navigation_menu3"
android:layout_gravity="start"
android:id="@+id/nv3"
app:headerLayout="@layout/navigation_header"
app:itemIconTint="@drawable/tint_color_selector2">
</android.support.design.widget.NavigationView>
【问题讨论】：
在此处添加 menu3 活动以检查是否有任何问题，谢谢。 我添加了 menu3 活动先生 就像我说的你必须在 3 个地方有相同的代码，检查你的 onNavigationItemSelected 方法。但这是不好的做法，如果你想正确地做到这一点，你应该按照我给你的教程做 我现在不想用片段来解决它...首先我想尝试用我的代码解决它，@BrunoFerreira 正在帮助我做到这一点。 【参考方案1】：尝试将 onNavigationItemSelected() 更改为：
public boolean onNavigationItemSelected(MenuItem menuItem)
switch(menuItem.getItemId())
case R.id.nav_home2:
startActivity(new Intent(Menu2.this, QuizActivity.class));
break;
case R.id.nav_about2:
startActivity(new Intent(Menu2.this, Menu3.class));
break;
return true;
【讨论】：
你好，我一定会试试这个答案，明天......如果它有效，我投票给你先生！ 每次单击项目时，意图值都会更改。那么这应该如何改变呢？ 因此，他第二次单击导航项时的意图值可能不会改变，使用开关盒通过不改变意图值而是启动我解释为@Nenco 的新意图来避免这种情况switch case 是一种更好的方法，因为它没有效率。 我同意开关是更好的方法，但它仍然不会改变任何事情伙伴:) 我要求放置 menu3 活动以查看它是否有问题，之后如果我发现其他问题，我将更新我的答案。我想帮助他更好地改进应用程序并解决问题:) @Nenco【参考方案2】：问题是您有 3 个活动，这取决于您从哪个活动开始。因此，对于您单击的项目，您必须在多个位置使用相同的代码。
更好的方法是使用片段。
您应该查看本教程： https://www.androidhive.info/2013/11/android-sliding-menu-using-navigation-drawer/
还要检查 MVP 设计模式。
【讨论】：
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