Disposición de restricción beta 4 – los fragmentos no funcionan

Nota 0: Por lo menos pruebe este código y háganos saber si funciona para usted o no. Porque en teoría esto debería funcionar, pero no

Nota 1: No hay error en este código simplemente no funciona si está en cualquier diseño de restricción por encima de alpha-7. Sin embargo, estoy poniendo el logcat.

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MainActivity.java:

import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.AppCompatActivity; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); FragmentManager mFragmentManager = getSupportFragmentManager(); FragmentTransaction mFragmentTransaction = mFragmentManager.beginTransaction(); Fragment fragment = new stupid(); mFragmentTransaction .add(R.id.main_activity, fragment, "stupid") .addToBackStack("stupid") .commit(); } } 

Activity_main.xml:

 <android.support.constraint.ConstraintLayout 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/main_activity" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/colorPrimary" android:clickable="true" android:fitsSystemWindows="true" tools:context=".MainActivity"> <TextView android:text="Hi 1" android:layout_width="wrap_content" android:layout_height="wrap_content" tools:layout_editor_absoluteY="13dp" tools:layout_editor_absoluteX="18dp" android:id="@+id/textView" /> </android.support.constraint.ConstraintLayout> 

Stupid.java:

 import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; /** * A simple {@link Fragment} subclass. */ public class stupid extends Fragment { public stupid() { // Required empty public constructor } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_stupid, container, false); } } 

Fragment_stupid.xml:

 <android.support.constraint.ConstraintLayout 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="xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx.stupid"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_blank_fragment" android:id="@+id/textView2" tools:layout_constraintTop_creator="1" tools:layout_constraintLeft_creator="1" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintTop_toTopOf="parent" android:layout_marginTop="136dp" /> </android.support.constraint.ConstraintLayout> 

Iniciar sesión:

 12-04 10:28:30.965 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/art: Late-enabling -Xcheck:jni 12-04 10:28:31.015 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/InstantRun: Instant Run Runtime started. Android package is xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx, real application class is null. 12-04 10:28:31.299 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx W/art: Failed to find OatDexFile for DexFile /data/data/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx/files/instant-run/dex/slice-slice_1-classes.dex ( canonical path /data/data/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx/files/instant-run/dex/slice-slice_1-classes.dex) with checksum 0xe09cbad0 in OatFile /data/data/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx/cache/slice-slice_1-classes.dex 12-04 10:28:31.512 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/LoadedApk: No resource references to update in package common 12-04 10:28:31.512 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/LoadedApk: No resource references to update in package com.brit.swiftdark 12-04 10:28:31.809 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx W/ResourceType: For resource 0x01030224, entry index(548) is beyond type entryCount(29) 12-04 10:28:31.809 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx W/ResourceType: For resource 0x01030224, entry index(548) is beyond type entryCount(29) 12-04 10:28:31.843 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 12-04 10:28:31.947 12609-12726/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true 12-04 10:28:31.956 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx D/Atlas: Validating map... 12-04 10:28:31.996 12609-12726/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/Adreno: QUALCOMM build : 065751b, Build Date : 04/15/15 OpenGL ES Shader Compiler Version: E031.25.03.07 Local Branch : Remote Branch : quic/LA.BF64.1.2.1_rb2.9 Remote Branch : NONE Reconstruct Branch : AU_LINUX_ANDROID_LA.BF64.1.2.1_RB2.05.01.00.081.016 + 065751b + NOTHING 12-04 10:28:32.003 12609-12726/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/OpenGLRenderer: Initialized EGL, version 1.4 12-04 10:28:32.011 12609-12726/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx D/OpenGLRenderer: Enabling debug mode 0 12-04 10:28:32.069 12609-12609/xxx.xxxxxxx.xxxxxxxx.xxxxxxxxxxxxx I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@22f2f04f time:200835125 

Editar 1: Alpha-7

Beta-4