Question

所以，我有这个奇怪的问题：我正在尝试使用包含用于滑出选择组件的ListView的DrawerLayout和一个包含特定片段的FrameLayout，具体取决于单击的ListView项。我已经在网上搜索答案，我已经阅读了书籍并观看了教程，我终于设法以一种我最终理解的方式做到这一点：很棒，你说！没那么快！

我留下了一个小小的问题虽然这让我的强迫症变得疯狂：ic_drawer图标（响应滑出的三垂直线的东西和抽屉的滑入）一旦我停止响应按下加载片段的ListView项，即。它保持在“抽屉打开”位置（部分隐藏在字面意义上）。我已尝试在代码中的各个点使用syncState（）方法，但没有运气。

包含抽屉布局的Activity的代码如下。请记住，其他一切都完美无缺 - 只要ic_drawer图标在我按下listview项目并且出现相关片段时就停止响应抽屉的滑出和滑入状态：

package com.example.jsonbourne;

import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class DrawerActivity extends Activity {

    private ActionBarDrawerToggle mDrawerToggle;
    private ListView mList;
    private DrawerLayout mDrawer;
    private String[] listCells1 = { "Profile", "Messages", "Log In", "Register" };
    private String[] listCells2 = { "Profile", "Messages", "Log Out" };
    final String[] fragments1 = { "com.example.jsonbourne.ProfileFragment",
            "com.example.jsonbourne.MessageFragment",
            "com.example.jsonbourne.LoginFragment",
            "com.example.jsonbourne.RegisterFragment" };
    final String[] fragments2 = null;

    public void onCreate(Bundle firebug) {
        super.onCreate(firebug);
        setContentView(R.layout.activity_drawer);

        // setting up action bar

        ActionBar actionBar = getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setHomeButtonEnabled(true);

        mList = (ListView) findViewById(R.id.listf);
        mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActionBar()
                .getThemedContext(), android.R.layout.simple_list_item_1,
                listCells1);

        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawer,
                R.drawable.ic_drawer, R.string.app_name, R.string.app_name) {

            public void onDrawerClosed(View view) {
                getActionBar().setTitle("title");
                invalidateOptionsMenu();

            }

            public void onDrawerOpened(View drawerView) {
                getActionBar().setTitle("title");
                invalidateOptionsMenu();
            }

        };

        mDrawer.setDrawerListener(mDrawerToggle);

        mList.setAdapter(adapter);

        mList.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    final int pos, long id) {
                mDrawer.setDrawerListener(new DrawerLayout.SimpleDrawerListener() {
                    @Override
                    public void onDrawerClosed(View drawerView) {
                        super.onDrawerClosed(drawerView);
                        FragmentTransaction ft = getFragmentManager()
                                .beginTransaction();
                        ft.replace(R.id.frame, Fragment.instantiate(
                                DrawerActivity.this, fragments1[pos]));
                        ft.commit();

                    }

                });
                mDrawer.closeDrawer(mList);
                mDrawerToggle.syncState();
            }

        });
        FragmentTransaction ft = getFragmentManager().beginTransaction();
        ft.replace(R.id.frame,
                Fragment.instantiate(DrawerActivity.this, fragments1[0]));
        ft.commit();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);

        return super.onCreateOptionsMenu(menu);

    }

    @Override
    protected void onPostCreate(Bundle savedInstanceStates) {
        super.onPostCreate(savedInstanceStates);

        mDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }


        /*if (item.getItemId() == android.R.id.home) {
            // Toast.makeText(this, "", Toast.LENGTH_SHORT).show();
            return true;
        }*/

        if (item.getItemId() == R.id.something) {
            Toast.makeText(this, "Something something", Toast.LENGTH_LONG)
                    .show();
        }

        return super.onOptionsItemSelected(item);
    }
}

有什么想法吗？令人惊讶的是，即使经过长时间的谷歌搜索会议，我也没有发现其他人遇到同样的问题。

Answer 1

您已拨打DrawerLayout.setDrawerListener两次，但希望原始版本保持同步。看起来您希望在Fragment关闭后交换每个DrawerLayout。以下是ActionBarDrawerToggle中设置的原始onCreate的示例。

设置Fragment变量

private Fragment mFragment;

onCreate

        @Override
        public void onDrawerClosed(View view) {
            ...
            if (mFragment != null) {
                final FragmentManager fm = getFragmentManager();
                fm.beginTransaction().replace(R.id.frame, mFragment).commit();
            }
        }

OnItemClickListener.onItemClick

    @Override
    public void onItemClick(AdapterView<?> parent, View view, final int position, long id) {
        mFragment = yourNewFragmentInstance;
        mDrawer.closeDrawer(mList);
    }

一旦我按下DrawerLayout的ListView中的第一项，ic_drawer图标就会停止响应

1 个答案: