[英]How do I fix: Transaction between multiple fragments and the Activity_main?
當我打開導航抽屜並滾動瀏覽不同的選項時(以下分別稱為A,B和C)。 當我單擊A,B或C時, Fragment
布局不會打開,並且卡在Activity_main
布局中。
以前,我將content_main
和Activity_main
作為兩個單獨的XML文件,並被告知必須將content_main
代碼放入Activity_main
(這樣做了),這刪除了no view found for id
錯誤的no view found for id
。
這是我的Activity_main
(現在):
<?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" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:srcCompat="@drawable/e"
android:id="@+id/imageView7"
android:layout_marginTop="96dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:contentDescription=""/>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:srcCompat="@drawable/welcome"
android:id="@+id/imageView2"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"/>
</LinearLayout>
非常感謝您的幫助! 如果還有其他可以提供的信息,請告訴我!
這是Java代碼:
package mcshreker.pocketmath;
import android.app.FragmentTransaction;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.support.v4.app.FragmentManager;
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.Layout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
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);
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();
return super.onOptionsItemSelected(item);
}
@RequiresApi(api = Build.VERSION_CODES.M)
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
FragmentManager fragmentManager = getSupportFragmentManager();
if (id == R.id.nav_first_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new firstFragment()).commit();
// Handle the camera action
/* } else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {*/
} else if (id == R.id.nav_second_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new secondFragment()).commit();
} else if (id == R.id.nav_third_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new thirdFragment()).commit();
} else if (id == R.id.nav_fourth_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new fourthFragment()).commit();
} else if (id == R.id.nav_fifth_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new fifthFragment()).commit();
} else if (id == R.id.nav_sixth_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new sixthFragment()).commit();
} else if (id == R.id.nav_seventh_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new seventhFragment()).commit();
} else if (id == R.id.nav_eighth_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new eighthFragment()).commit();
} else if (id == R.id.nav_ninth_layout) {
fragmentManager.beginTransaction().replace
(R.id.drawer_layout, new ninthFragment()).commit();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
我不認為您應該替換主要活動布局。 如果您在主活動布局中具有與其父代寬度和高度相匹配的視圖(如框架布局),則效果會更好。
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