java-无法单击Android按钮

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我正在创建一个应用程序,该应用程序在顶部使用带有一些按钮的片段之类的工具栏.按钮以编程方式添加.

问题是,当我启动该应用程序时,会出现工具栏和按钮,但是无法单击按钮.当将鼠标悬停在按钮上(我使用模拟器)或单击按钮时,它们根本不会改变,也不会通知我的OnClickListener.但是,其下面片段中的按钮和其他组件可以正常工作.

The Toolbar’s code:

public class ToolbarFragment extends Fragment implements 
View.OnClickListener{

public static final String LOG_KEY = "SM_TOOLBAR";

public static final String TO_ADD_FEED_KEY = "TO_ADD_FEED_KEY";
public static final String TO_ADD_PROFILE_KEY = "TO_ADD_PROFILE_KEY";
public static final String TO_ADD_FRIENDS_KEY = "TO_ADD_FRIENDS_KEY";

private Button feed;
private Button profile;
private Button friends;
private Button logout;

public ToolbarFragment() {
    // Required empty public constructor
}

private Button addButton(int stringID, LinearLayout linearLayout) {
    Button button = new Button(getContext());
    button.setText(stringID);
    button.setOnClickListener(this);
    linearLayout.addView(button);
    return button;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    LinearLayout linearLayout = (LinearLayout)inflater.inflate(R.layout.fragment_toolbar, container, false);


    Bundle arguments = getArguments();
    if (arguments.getBoolean(TO_ADD_FEED_KEY)) {
        Log.i(LOG_KEY, "Created feed key");
        feed = addButton(R.string.feed, linearLayout);
    }
    if (arguments.getBoolean(TO_ADD_PROFILE_KEY)) {
        Log.i(LOG_KEY, "Created profile Key");
        profile = addButton(R.string.profile, linearLayout);
    }
    if (arguments.getBoolean(TO_ADD_FRIENDS_KEY)) {
        Log.i(LOG_KEY, "Created friends key");
        friends = addButton(R.string.friends, linearLayout);
    }
    logout = addButton(R.string.logout, linearLayout);

    return linearLayout;
}

@Override
public void onClick(View view) {
    Log.i(LOG_KEY, "A button was clicked.");
    if (getActivity() instanceof IToolbarCallback) {
        IToolbarCallback itc = (IToolbarCallback) getActivity();
        if (view.equals(feed)) {
            itc.feed();
        }
        if (view.equals(profile)) {
            itc.profile();
        }
        if (view.equals(friends)) {
            itc.friends();
        }
        if (view.equals(logout)) {
            itc.logout();
        }
    }
}

}

There’s no other code pertinent to this, besides the callback
interface.

public interface IToolbarCallback {

void feed();

void profile();

void logout();

void friends();

}

This is just used to let the host activity know what was clicked.
Finally, the XML:

<LinearLayout 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"
tools:context="project3.csc214.project23.Fragments.Toolbar.ToolbarFragment"
android:orientation="horizontal">

I use a builder for the fragment, and here’s the code:

public class ToolbarBuilder {

private boolean addFeed;
private boolean addProfile;
private boolean addFriends;

private FragmentManager fragmentManager;
private int addToID;

public ToolbarBuilder(FragmentManager fragmentManager, int addToID) {
    this.fragmentManager = fragmentManager;
    this.addToID = addToID;
    addFeed = false;
    addProfile = false;
    addFriends = false;
}

public ToolbarBuilder addFeed() {
    addFeed = true;
    return this;
}

public ToolbarBuilder addProfile() {
    addProfile = true;
    return this;
}

public ToolbarBuilder addFriends() {
    addFriends = true;
    return this;
}

public void build() {
    Bundle bundle = new Bundle();
    bundle.putBoolean(ToolbarFragment.TO_ADD_FEED_KEY, addFeed);
    bundle.putBoolean(ToolbarFragment.TO_ADD_FRIENDS_KEY, addFriends);
    bundle.putBoolean(ToolbarFragment.TO_ADD_PROFILE_KEY, addProfile);
    ToolbarFragment toolbarFragment = new ToolbarFragment();
    toolbarFragment.setArguments(bundle);
    fragmentManager.beginTransaction().add(addToID, toolbarFragment).commit();
}

}

只是为了澄清,据我所知,这些按钮没有收到任何输入.他们不仅没有打电话给onClick,而且根本没有做出任何反应.据我所知,onClick设置正确,按钮在某些基本级别上只是断开的.

情节已经扩大.在其他活动中使用完全相同的设置似乎可以使其正常工作……据我所知,没有任何更改.

无论如何,我决定仅对该活动进行硬编码,以便继续进行应用程序的其他部分.谢谢大家对问题的审议.如果我知道发生了什么,我会再次发布.

解决方法:

不要比较视图以查看它们是否相等,请比较ID.这里：

@Override
public void onClick(View view) {
    Log.i(LOG_KEY, "A button was clicked.");
    if (getActivity() instanceof IToolbarCallback) {
        IToolbarCallback itc = (IToolbarCallback) getActivity();
        if (view.equals(feed)) {
            itc.feed();
        }
        if (view.equals(profile)) {
            itc.profile();
        }
        if (view.equals(friends)) {
            itc.friends();
        }
        if (view.equals(logout)) {
            itc.logout();
        }
    }
}

它应该是：

@Override
public void onClick(View view) {
    Log.i(LOG_KEY, "A button was clicked.");
    if (getActivity() instanceof IToolbarCallback) {
        IToolbarCallback itc = (IToolbarCallback) getActivity();
        if (view.getId() == feed.getId()) {
            itc.feed();
        }
        if (view.getId() == profile.getId()) {
            itc.profile();
        }
        if (view.getId() == friends.getId()) {
            itc.friends();
        }
        if (view.getId() == logout.getId()) {
            itc.logout();
        }
    }
}

此外,当您自己创建视图时,还需要给它们提供ID.如果您的API级别为17,则只需在视图上调用generateViewId(),Android就会为您创建一个唯一的ID.
所以这样做：

private Button addButton(int stringID, LinearLayout linearLayout) {
    Button button = new Button(getContext());
    button.setText(stringID);
    button.setOnClickListener(this);
    linearLayout.addView(button);
    button.generateViewId();
    return button;
}

编辑：
除了上面指定的内容之外,您的代码看起来还不错.我想尝试的一件事是在addButton方法外部设置侦听器：

private Button addButton(int stringID, LinearLayout linearLayout) {
    Button button = new Button(getContext());
    button.setText(stringID);
    linearLayout.addView(button);
    button.generateViewId();
    return button;
}


if (arguments.getBoolean(TO_ADD_FEED_KEY)) {
        Log.i(LOG_KEY, "Created feed key");
        feed = addButton(R.string.feed, linearLayout);
        feed.setOnClickListener(this);
    }
    if (arguments.getBoolean(TO_ADD_PROFILE_KEY)) {
        Log.i(LOG_KEY, "Created profile Key");
        profile = addButton(R.string.profile, linearLayout);
        profile.setOnClickListener(this);
    }
    if (arguments.getBoolean(TO_ADD_FRIENDS_KEY)) {
        Log.i(LOG_KEY, "Created friends key");
        friends = addButton(R.string.friends, linearLayout);
        friends.setOnClickListener(this);
    }
    logout = addButton(R.string.logout, linearLayout);
    logout.setOnClickListener(this);

如果这不起作用,请尝试检查按钮上方是否没有其他任何拦截点击事件的视图.

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