未找到ID 0x7f070053视图 [英] No view found for id 0x7f070053

问题描述

在测试中的Andr​​oid工作室SOM的东西，跑了这个错误：

  

致命异常：主要
      工艺：com.meisolsson.app，PID：25610
      了java.lang.RuntimeException：无法启动活动ComponentInfo {} com.meisolsson.app/com.meisolsson.app.LoginActivity：java.lang.IllegalArgumentException异常：未找到ID 0x7f070053视图（com.meisolsson.app:id/container）对于片段PlaceholderFragment {4284e750＃0 ID = 0x7f070053}

下面是我的LoginActivity.java

 包com.meisolsson.app;进口android.support.v7.app.ActionBarActivity;
进口android.support.v7.app.ActionBar;
进口android.support.v4.app.Fragment;
进口android.os.Bundle;
进口android.view.LayoutInflater;
进口android.view.Menu;
进口android.view.MenuItem;
进口android.view.View;
进口android.view.ViewGroup;
进口android.os.Build;
进口android.view.Window;
进口android.widget.Button;公共类LoginActivity扩展ActionBarActivity {私人按钮loginButton;@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
    this.requestWindowFeature（Window.FEATURE_NO_TITLE）;
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.fragment_login）;    如果（savedInstanceState == NULL）{
        getSupportFragmentManager（）调用BeginTransaction（）
                。新增（R.id.container，新PlaceholderFragment（））
                。承诺（）;
    }
    this.setContentView（R.layout.fragment_login）;
    this.loginButton =（按钮）this.findViewById（R.id.button）;
    this.loginButton.setOnClickListener（新View.OnClickListener（）{
        @覆盖
        公共无效的onClick（视图v）{
            完（）;
        }
    }）;
}
@覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{    //充气菜单;如果是present这增加了项目操作栏。
    。getMenuInflater（）膨胀（R.menu.login，菜单）;
    返回true;
}@覆盖
公共布尔onOptionsItemSelected（菜单项项）{
    //处理动作栏项目点击这里。操作栏会
    //自动处理上点击主页/向上按钮，只要
    //你在AndroidManifest.xml中指定一个父活动。
    INT ID = item.getItemId（）;
    如果（ID == R.id.action_settings）{
        返回true;
    }
    返回super.onOptionsItemSelected（项目）;
}公共静态类PlaceholderFragment扩展片段{    公共PlaceholderFragment（）{
    }    @覆盖
    公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，
                             捆绑savedInstanceState）{
        查看rootView = inflater.inflate（R.layout.fragment_login，集装箱，FALSE）;
        返回rootView;       }
   }
}
 

和我fragment_login.xml

 ＆LT;的RelativeLayout的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
的xmlns：工具=htt​​p://schemas.android.com/tool​​s
机器人：layout_width =match_parent
机器人：layout_height =match_parent
机器人：paddingLeft =@扪/ activity_horizo​​ntal_margin
机器人：paddingRight =@扪/ activity_horizo​​ntal_margin
机器人：paddingTop =@扪/ activity_vertical_margin
机器人：paddingBottom会=@扪/ activity_vertical_margin
工具：上下文=。LoginActivity $ PlaceholderFragment
机器人：可聚焦=真
机器人：背景=＃fcff00＆GT;
＆LT;的EditText
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：ID =@ + ID / EDITTEXT
    机器人：提示=@字符串/用户
    机器人：填充=10dp
    机器人：背景=＃FFFFFF
    机器人：layout_above =@ + ID / editText2
    机器人：layout_alignLeft =@ + ID / editText2
    机器人：layout_alignRight =@ + ID / editText2/＆GT;＆LT;的EditText
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    安卓的inputType =textPassword
    机器人：EMS =10
    机器人：ID =@ + ID / editText2
    机器人：layout_centerVertical =真
    机器人：layout_centerHorizo​​ntal =真
    机器人：提示=@字符串/通
    机器人：背景=＃FFFFFF
    机器人：填充=10dp/＆GT;
＆LT;按钮
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：文字=@字符串/登录
    机器人：ID =@ + ID /按钮
    风格=@风格/ AppTheme
    机器人：背景=＃ff5900
    安卓则shadowColor =＃000000
    机器人：layout_below =@ + ID / editText2
    机器人：layout_alignLeft =@ + ID / EDITTEXT
    机器人：layout_alignRight =@ + ID / editText2
    机器人：可点击=真/＆GT;＆LT; / RelativeLayout的＆GT;
 

解决方案

问题是你这样做的方式。对于活动，您没有设置片段的看法，您设置独立认为，有一个点要放片段。这取决于你如何做你的 PlaceHolderFragment ，下面应该得到一个工作程序。

首先添加此文件：

activity_main.xml中

 ＆LT;的FrameLayout
    机器人：ID =@ + ID /容器
    机器人：layout_width =match_parent
    机器人：layout_height =match_parent/＆GT;
 

然后在你的活动改变这个东西：

LoginActivity.java

/ *同样的东西* /@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
    this.requestWindowFeature（Window.FEATURE_NO_TITLE）;
    super.onCreate（savedInstanceState）;    //这是对这里的重要的变化！
    的setContentView（R.layout.activity_main）;    如果（savedInstanceState == NULL）{
        getSupportFragmentManager（）调用BeginTransaction（）
                。新增（R.id.container，新PlaceholderFragment（））
                。承诺（）;
    }    //你已处理按钮的东西应该在你的
    // PlaceHolderFragment类的onCreateView（）方法
}

我希望这有助于。祝你好运！

was testing som things in Android Studios and ran in to this error:

FATAL EXCEPTION: main Process: com.meisolsson.app, PID: 25610 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.meisolsson.app/com.meisolsson.app.LoginActivity}: java.lang.IllegalArgumentException: No view found for id 0x7f070053 (com.meisolsson.app:id/container) for fragment PlaceholderFragment{4284e750 #0 id=0x7f070053}

Here is my LoginActivity.java

package com.meisolsson.app;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;
import android.view.Window;
import android.widget.Button;

public class LoginActivity extends ActionBarActivity {

private Button loginButton;



@Override
protected void onCreate(Bundle savedInstanceState) {
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.fragment_login);

    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment())
                .commit();
    }
    this.setContentView(R.layout.fragment_login);
    this.loginButton = (Button)this.findViewById(R.id.button);
    this.loginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });
}


@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.login, 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();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public static class PlaceholderFragment extends Fragment {

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_login, container, false);
        return rootView;

       }
   }
}

And my fragment_login.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".LoginActivity$PlaceholderFragment"
android:focusable="true"
android:background="#fcff00">
<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/editText"
    android:hint="@string/user"
    android:padding="10dp"
    android:background="#ffffff"
    android:layout_above="@+id/editText2"
    android:layout_alignLeft="@+id/editText2"
    android:layout_alignRight="@+id/editText2" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="textPassword"
    android:ems="10"
    android:id="@+id/editText2"
    android:layout_centerVertical="true"
    android:layout_centerHorizontal="true"
    android:hint="@string/pass"
    android:background="#ffffff"
    android:padding="10dp" />


<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/login"
    android:id="@+id/button"
    style="@style/AppTheme"
    android:background="#ff5900"
    android:shadowColor="#000000"
    android:layout_below="@+id/editText2"
    android:layout_alignLeft="@+id/editText"
    android:layout_alignRight="@+id/editText2"
    android:clickable="true"/>

</RelativeLayout>

解决方案

The problem is the way you're doing this. For the Activity, you don't set the Fragment's view, you set a separate view that has a spot to put a Fragment. Depending on how you did your PlaceHolderFragment, the following ought to get a working app.

First add this file:

activity_main.xml

<FrameLayout
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

Then change this stuff in your Activity:

LoginActivity.java

/* Same stuff*/

@Override
protected void onCreate(Bundle savedInstanceState) {
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    super.onCreate(savedInstanceState);

    //This is the important change right here!
    setContentView(R.layout.activity_main);

    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment())
                .commit();
    }

    //The stuff that you had handling buttons should go in your
    //PlaceHolderFragment class's onCreateView() method
}

I hope this helps. Good Luck!

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