Question

我正在尝试创建一个有3个按钮的页面，即; 添加一个人，重命名一个人，删除某人

但是当我试图点击添加一个人错误显示无法启动你的应用程序时。重命名一个人正在发生这种事情。我无法检测到错误。请帮助。

History.java

public class History extends ActionBarActivity {

    Button addPerson;
    Button renamePerson;
    Button deletePerson;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.history);
        addPerson = (Button)findViewById(R.id.button1);
        renamePerson = (Button)findViewById(R.id.button2);
        addPerson.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent i1= new Intent(History.this,AddPerson.class);
                startActivity(i1);
            }
        });
        /*renamePerson.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) 
            {
                Intent i2= new Intent(History.this,RenamePerson.class);
                startActivity(i2);
            }
        });*/
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.history, 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);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    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_history,
                    container, false);
            return rootView;
        }
    }

}

history.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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.button.ButtonActivity$PlaceholderFragment" >
<ScrollView 
    android:id="@+id/scrollViewTopicGrade"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@android:color/transparent" >

        <RelativeLayout 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="This area is for you to administer the mulitple persons for which you are maintaining records." />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="52dp"
        android:text="Add a new Person" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="22dp"
        android:text="Current Person" />

    <Button
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView2"
        android:layout_below="@+id/textView2"
        android:layout_marginTop="36dp"
        android:text="Rename Person" />

    <Button
        android:id="@+id/button4"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/button2"
        android:layout_below="@+id/button2"
        android:layout_marginTop="32dp"
        android:text="Delete This Person" />
</RelativeLayout>
</ScrollView>
</RelativeLayout>

addPerson.java

public class AddPerson extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_person);

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

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.add_person, 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);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    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_add_person,
                    container, false);
            return rootView;
        }
    }

}

activity_add_person

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.app.AddPerson$PlaceholderFragment" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="Person's Name" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="14dp"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/editText1"
        android:layout_below="@+id/editText1"
        android:layout_marginTop="20dp"
        android:text="Create This Person" />

</RelativeLayout>

这是我的LogCat

06-25 01:49:50.830: E/AndroidRuntime(1643): FATAL EXCEPTION: main
06-25 01:49:50.830: E/AndroidRuntime(1643): Process: com.example.app, PID: 1643
06-25 01:49:50.830: E/AndroidRuntime(1643): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.app/com.example.app.AddPerson}: java.lang.IllegalArgumentException: No view found for id 0x7f05004f (com.example.app:id/container) for fragment PlaceholderFragment{b2e38220 #0 id=0x7f05004f}
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread.access$800(ActivityThread.java:135)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.os.Handler.dispatchMessage(Handler.java:102)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.os.Looper.loop(Looper.java:136)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread.main(ActivityThread.java:5017)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at java.lang.reflect.Method.invokeNative(Native Method)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at java.lang.reflect.Method.invoke(Method.java:515)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at dalvik.system.NativeStart.main(Native Method)
06-25 01:49:50.830: E/AndroidRuntime(1643): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f05004f (com.example.app:id/container) for fragment PlaceholderFragment{b2e38220 #0 id=0x7f05004f}
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:919)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.Activity.performStart(Activity.java:5241)
06-25 01:49:50.830: E/AndroidRuntime(1643):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
06-25 01:49:50.830: E/AndroidRuntime(1643):     ... 11 more

Answer 1

试试这个..

从AddPerson.java

中删除以下代码

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

因为container不在activity_add_person.xml

的视图中

Answer 2

    setContentView(R.layout.activity_add_person);

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

R.id.container

中没有R.layout.activity_add_person

这就是它崩溃的原因

删除这些行：

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

或

将id容器添加到活动：

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:id="@+id/container"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.app.AddPerson$PlaceholderFragment" >

无法移动到SecondActivity

2 个答案: