如何在片段中实现按钮SetOnClickListener?(How to implement button SetOnClickListener in a fragment?)
我正在做一个小项目,我想使用滑块菜单。 长话短说我碰巧在某个网站上使用抽屉找到滑块菜单的源代码,它在我的设备上运行良好。 但是我有点困惑将我之前的活动迁移到这个滑块菜单中,因为它们对listView上的每个单独的项使用片段。
为了简单起见,我想迁移一个能够执行Ping功能的活动。 它的xml文件包含一个EditText,一个Button和一个用于显示输出的TextView。
现在,我确实设法“成功”将该活动迁移到此片段中。 抽屉运行良好,但我卡住了,因为我点击ping按钮后应用程序始终强制关闭。
PS:我还没有更改课程名称,原谅我
以下是我的代码:
这是我最初的Ping活动:
package my.jlm; import java.io.IOException; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.InetAddress; import java.net.UnknownHostException; import android.app.Activity; import android.os.Bundle; import android.text.Editable; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class Ping extends Activity { EditText edit; TextView text; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_ping); edit = (EditText)findViewById(R.id.editText1); edit.setText("192.168.1.1"); text = (TextView)findViewById(R.id.textView1); Button button = (Button)findViewById(R.id.button1); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Editable host = edit.getText(); try { String pingCmd = "ping -c 5 " + host; String pingResult = ""; Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); text.setText(inputLine + "\n\n"); pingResult += inputLine; text.setText(pingResult); } in.close(); }//try catch (IOException e) { System.out.println(e); } } }); }}
这个FindPeopleFragment.java(这应该是PingFragment.java)。 我认为这是一次成功的尝试,因为日食没有显示任何红色标记,但如果我错了请指正。
package info.androidhive.slidingmenu; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import android.app.Fragment; import android.content.Intent; import android.os.Bundle; import android.text.Editable; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class FindPeopleFragment extends Fragment implements OnClickListener { EditText edit; TextView text; Button button; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.activity_ping, container, false); EditText edit = (EditText) rootView.findViewById(R.id.editText1); edit.setText("192.168.1.1"); text = (TextView) rootView.findViewById(R.id.textView1); button = (Button)rootView.findViewById(R.id.button1); button.setOnClickListener(onClickListener); return rootView; } @Override public void onClick(View v) { Editable host = edit.getText(); try { String pingCmd = "ping -c 5 " + host; String pingResult = ""; Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); text.setText(inputLine + "\n\n"); pingResult += inputLine; text.setText(pingResult); } in.close(); }//try catch (IOException e) { System.out.println(e); } } };;
最后这是我上面项目的清单
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="info.androidhive.slidingmenu" android:versionCode="1" android:versionName="1.0" > <permission android:name="my.jlm.permission.MAPS_RECEIVE" android:protectionLevel="signature"/> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> <uses-permission android:name="museumjakarta.source.permission.MAPS_RECEIVE"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.CALL_PHONE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-sdk android:minSdkVersion="11" android:targetSdkVersion="17" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="info.androidhive.slidingmenu.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
这是我的LogCat错误日志:
03-15 09:07:41.160: E/AndroidRuntime(1267): FATAL EXCEPTION: main 03-15 09:07:41.160: E/AndroidRuntime(1267): Process: info.androidhive.slidingmenu, PID: 1267 03-15 09:07:41.160: E/AndroidRuntime(1267): java.lang.NullPointerException 03-15 09:07:41.160: E/AndroidRuntime(1267): at info.androidhive.slidingmenu.FindPeopleFragment.onClick(FindPeopleFragment.java:53) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.view.View.performClick(View.java:4424) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.view.View$PerformClick.run(View.java:18383) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Handler.handleCallback(Handler.java:733) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Handler.dispatchMessage(Handler.java:95) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Looper.loop(Looper.java:137) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.app.ActivityThread.main(ActivityThread.java:4998) 03-15 09:07:41.160: E/AndroidRuntime(1267): at java.lang.reflect.Method.invokeNative(Native Method) 03-15 09:07:41.160: E/AndroidRuntime(1267): at java.lang.reflect.Method.invoke(Method.java:515) 03-15 09:07:41.160: E/AndroidRuntime(1267): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777) 03-15 09:07:41.160: E/AndroidRuntime(1267): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) 03-15 09:07:41.160: E/AndroidRuntime(1267): at dalvik.system.NativeStart.main(Native Method)
这里简化的就是我所经历的:在我从Drawer ListView中单击后会显示Ping xml页面,但是当我单击其中的Ping按钮时,应用程序崩溃,导致上面的错误日志。 帮我解决这个问题,非常感谢你。
PS:我正在使用eclipse adt,因为我不能在我的AMD处理器上运行AS。
编辑:认为它可能会有所帮助,我将为此片段发布mainActivity.java:
package info.androidhive.slidingmenu; import info.androidhive.slidingmenu.adapter.NavDrawerListAdapter; import info.androidhive.slidingmenu.model.NavDrawerItem; import java.util.ArrayList; import android.app.Activity; import android.app.Fragment; import android.app.FragmentManager; import android.content.res.Configuration; import android.content.res.TypedArray; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.widget.DrawerLayout; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ListView; public class MainActivity extends Activity { private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; // nav drawer title private CharSequence mDrawerTitle; // used to store app title private CharSequence mTitle; // slide menu items private String[] navMenuTitles; private TypedArray navMenuIcons; private ArrayList<NavDrawerItem> navDrawerItems; private NavDrawerListAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTitle = mDrawerTitle = getTitle(); // load slide menu items navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items); // nav drawer icons from resources navMenuIcons = getResources() .obtainTypedArray(R.array.nav_drawer_icons); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.list_slidermenu); navDrawerItems = new ArrayList<NavDrawerItem>(); // adding nav drawer items to array // Home navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1))); // Find People navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1))); // Photos navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1))); // Communities, Will add a counter here navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22")); // Pages navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1))); // What's hot, We will add a counter here navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+")); // Recycle the typed array navMenuIcons.recycle(); mDrawerList.setOnItemClickListener(new SlideMenuClickListener()); // setting the nav drawer list adapter adapter = new NavDrawerListAdapter(getApplicationContext(), navDrawerItems); mDrawerList.setAdapter(adapter); // enabling action bar app icon and behaving it as toggle button getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer, //nav menu toggle icon R.string.app_name, // nav drawer open - description for accessibility R.string.app_name // nav drawer close - description for accessibility ) { public void onDrawerClosed(View view) { getActionBar().setTitle(mTitle); // calling onPrepareOptionsMenu() to show action bar icons invalidateOptionsMenu(); } public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); // calling onPrepareOptionsMenu() to hide action bar icons invalidateOptionsMenu(); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); if (savedInstanceState == null) { // on first time display view for first nav item displayView(0); } } /** * Slide menu item click listener * */ private class SlideMenuClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // display view for selected nav drawer item displayView(position); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // toggle nav drawer on selecting action bar app icon/title if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action bar actions click switch (item.getItemId()) { case R.id.action_settings: return true; default: return super.onOptionsItemSelected(item); } } /* * * Called when invalidateOptionsMenu() is triggered */ @Override public boolean onPrepareOptionsMenu(Menu menu) { // if nav drawer is opened, hide the action items boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); menu.findItem(R.id.action_settings).setVisible(!drawerOpen); return super.onPrepareOptionsMenu(menu); } /** * Diplaying fragment view for selected nav drawer list item * */ private void displayView(int position) { // update the main content by replacing fragments Fragment fragment = null; switch (position) { case 0: fragment = new HomeFragment(); break; case 1: fragment = new FindPeopleFragment(); break; case 2: fragment = new PhotosFragment(); break; case 3: fragment = new CommunityFragment(); break; case 4: fragment = new PagesFragment(); break; case 5: fragment = new WhatsHotFragment(); break; default: break; } if (fragment != null) { FragmentManager fragmentManager = getFragmentManager(); fragmentManager.beginTransaction() .replace(R.id.frame_container, fragment).commit(); // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); mDrawerList.setSelection(position); setTitle(navMenuTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } else { // error in creating fragment Log.e("MainActivity", "Error in creating fragment"); } } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(mTitle); } /** * When using the ActionBarDrawerToggle, you must call it during * onPostCreate() and onConfigurationChanged()... */ @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); // Sync the toggle state after onRestoreInstanceState has occurred. mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Pass any configuration change to the drawer toggls mDrawerToggle.onConfigurationChanged(newConfig); } }
I'm working on a small project and I want to use a Slider Menu. Long story short I happen to find a source code of a slider menu using drawer from some website and it works very well on my device. However I'm a little bit confused migrating my previous activity into this slider menu because they use fragment for each individual item on the listView.
To simple things up I want to migrate an activity that capable of do a Ping function. it's xml file consist of one EditText, a Button, and a TextView for showing the output.
Now I did manage to "successfully" migrating that activity into this fragment. The drawer runs well, but I got stuck because the app always force close after I click on the ping button.
PS: I haven't change the class name yet, pardon me
Below are my code:
this is my original Ping activity:
package my.jlm; import java.io.IOException; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.InetAddress; import java.net.UnknownHostException; import android.app.Activity; import android.os.Bundle; import android.text.Editable; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class Ping extends Activity { EditText edit; TextView text; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_ping); edit = (EditText)findViewById(R.id.editText1); edit.setText("192.168.1.1"); text = (TextView)findViewById(R.id.textView1); Button button = (Button)findViewById(R.id.button1); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Editable host = edit.getText(); try { String pingCmd = "ping -c 5 " + host; String pingResult = ""; Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); text.setText(inputLine + "\n\n"); pingResult += inputLine; text.setText(pingResult); } in.close(); }//try catch (IOException e) { System.out.println(e); } } }); }}
this FindPeopleFragment.java (this should be the PingFragment.java). I thought this was a successful attempt because eclipse didn't show any red mark, but if Im wrong please correct me.
package info.androidhive.slidingmenu; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import android.app.Fragment; import android.content.Intent; import android.os.Bundle; import android.text.Editable; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class FindPeopleFragment extends Fragment implements OnClickListener { EditText edit; TextView text; Button button; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.activity_ping, container, false); EditText edit = (EditText) rootView.findViewById(R.id.editText1); edit.setText("192.168.1.1"); text = (TextView) rootView.findViewById(R.id.textView1); button = (Button)rootView.findViewById(R.id.button1); button.setOnClickListener(onClickListener); return rootView; } @Override public void onClick(View v) { Editable host = edit.getText(); try { String pingCmd = "ping -c 5 " + host; String pingResult = ""; Runtime r = Runtime.getRuntime(); Process p = r.exec(pingCmd); BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream())); String inputLine; while ((inputLine = in.readLine()) != null) { System.out.println(inputLine); text.setText(inputLine + "\n\n"); pingResult += inputLine; text.setText(pingResult); } in.close(); }//try catch (IOException e) { System.out.println(e); } } };;
and finally this is my Manifest for above project
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="info.androidhive.slidingmenu" android:versionCode="1" android:versionName="1.0" > <permission android:name="my.jlm.permission.MAPS_RECEIVE" android:protectionLevel="signature"/> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> <uses-permission android:name="museumjakarta.source.permission.MAPS_RECEIVE"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.CALL_PHONE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-sdk android:minSdkVersion="11" android:targetSdkVersion="17" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="info.androidhive.slidingmenu.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
and this is my LogCat error log:
03-15 09:07:41.160: E/AndroidRuntime(1267): FATAL EXCEPTION: main 03-15 09:07:41.160: E/AndroidRuntime(1267): Process: info.androidhive.slidingmenu, PID: 1267 03-15 09:07:41.160: E/AndroidRuntime(1267): java.lang.NullPointerException 03-15 09:07:41.160: E/AndroidRuntime(1267): at info.androidhive.slidingmenu.FindPeopleFragment.onClick(FindPeopleFragment.java:53) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.view.View.performClick(View.java:4424) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.view.View$PerformClick.run(View.java:18383) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Handler.handleCallback(Handler.java:733) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Handler.dispatchMessage(Handler.java:95) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.os.Looper.loop(Looper.java:137) 03-15 09:07:41.160: E/AndroidRuntime(1267): at android.app.ActivityThread.main(ActivityThread.java:4998) 03-15 09:07:41.160: E/AndroidRuntime(1267): at java.lang.reflect.Method.invokeNative(Native Method) 03-15 09:07:41.160: E/AndroidRuntime(1267): at java.lang.reflect.Method.invoke(Method.java:515) 03-15 09:07:41.160: E/AndroidRuntime(1267): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777) 03-15 09:07:41.160: E/AndroidRuntime(1267): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593) 03-15 09:07:41.160: E/AndroidRuntime(1267): at dalvik.system.NativeStart.main(Native Method)
to simplify here is what I experienced: the Ping xml page shows up after I click from the Drawer ListView, however when I click the Ping Button inside it, the application crashed, resulting the above error log. Help me resolve this problem and thank you very much.
PS: I'm using eclipse adt because I can't run AS on my AMD processor.
edit: thought it may help, i will post the mainActivity.java for this fragment:
package info.androidhive.slidingmenu; import info.androidhive.slidingmenu.adapter.NavDrawerListAdapter; import info.androidhive.slidingmenu.model.NavDrawerItem; import java.util.ArrayList; import android.app.Activity; import android.app.Fragment; import android.app.FragmentManager; import android.content.res.Configuration; import android.content.res.TypedArray; import android.os.Bundle; import android.support.v4.app.ActionBarDrawerToggle; import android.support.v4.widget.DrawerLayout; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ListView; public class MainActivity extends Activity { private DrawerLayout mDrawerLayout; private ListView mDrawerList; private ActionBarDrawerToggle mDrawerToggle; // nav drawer title private CharSequence mDrawerTitle; // used to store app title private CharSequence mTitle; // slide menu items private String[] navMenuTitles; private TypedArray navMenuIcons; private ArrayList<NavDrawerItem> navDrawerItems; private NavDrawerListAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mTitle = mDrawerTitle = getTitle(); // load slide menu items navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items); // nav drawer icons from resources navMenuIcons = getResources() .obtainTypedArray(R.array.nav_drawer_icons); mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); mDrawerList = (ListView) findViewById(R.id.list_slidermenu); navDrawerItems = new ArrayList<NavDrawerItem>(); // adding nav drawer items to array // Home navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1))); // Find People navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1))); // Photos navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1))); // Communities, Will add a counter here navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22")); // Pages navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1))); // What's hot, We will add a counter here navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+")); // Recycle the typed array navMenuIcons.recycle(); mDrawerList.setOnItemClickListener(new SlideMenuClickListener()); // setting the nav drawer list adapter adapter = new NavDrawerListAdapter(getApplicationContext(), navDrawerItems); mDrawerList.setAdapter(adapter); // enabling action bar app icon and behaving it as toggle button getActionBar().setDisplayHomeAsUpEnabled(true); getActionBar().setHomeButtonEnabled(true); mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.drawable.ic_drawer, //nav menu toggle icon R.string.app_name, // nav drawer open - description for accessibility R.string.app_name // nav drawer close - description for accessibility ) { public void onDrawerClosed(View view) { getActionBar().setTitle(mTitle); // calling onPrepareOptionsMenu() to show action bar icons invalidateOptionsMenu(); } public void onDrawerOpened(View drawerView) { getActionBar().setTitle(mDrawerTitle); // calling onPrepareOptionsMenu() to hide action bar icons invalidateOptionsMenu(); } }; mDrawerLayout.setDrawerListener(mDrawerToggle); if (savedInstanceState == null) { // on first time display view for first nav item displayView(0); } } /** * Slide menu item click listener * */ private class SlideMenuClickListener implements ListView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // display view for selected nav drawer item displayView(position); } } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // toggle nav drawer on selecting action bar app icon/title if (mDrawerToggle.onOptionsItemSelected(item)) { return true; } // Handle action bar actions click switch (item.getItemId()) { case R.id.action_settings: return true; default: return super.onOptionsItemSelected(item); } } /* * * Called when invalidateOptionsMenu() is triggered */ @Override public boolean onPrepareOptionsMenu(Menu menu) { // if nav drawer is opened, hide the action items boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList); menu.findItem(R.id.action_settings).setVisible(!drawerOpen); return super.onPrepareOptionsMenu(menu); } /** * Diplaying fragment view for selected nav drawer list item * */ private void displayView(int position) { // update the main content by replacing fragments Fragment fragment = null; switch (position) { case 0: fragment = new HomeFragment(); break; case 1: fragment = new FindPeopleFragment(); break; case 2: fragment = new PhotosFragment(); break; case 3: fragment = new CommunityFragment(); break; case 4: fragment = new PagesFragment(); break; case 5: fragment = new WhatsHotFragment(); break; default: break; } if (fragment != null) { FragmentManager fragmentManager = getFragmentManager(); fragmentManager.beginTransaction() .replace(R.id.frame_container, fragment).commit(); // update selected item and title, then close the drawer mDrawerList.setItemChecked(position, true); mDrawerList.setSelection(position); setTitle(navMenuTitles[position]); mDrawerLayout.closeDrawer(mDrawerList); } else { // error in creating fragment Log.e("MainActivity", "Error in creating fragment"); } } @Override public void setTitle(CharSequence title) { mTitle = title; getActionBar().setTitle(mTitle); } /** * When using the ActionBarDrawerToggle, you must call it during * onPostCreate() and onConfigurationChanged()... */ @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); // Sync the toggle state after onRestoreInstanceState has occurred. mDrawerToggle.syncState(); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); // Pass any configuration change to the drawer toggls mDrawerToggle.onConfigurationChanged(newConfig); } }
原文:https://stackoverflow.com/questions/29063082
最满意答案
该文件在网络负载方面不会变小。 如果你无论如何都控制了源代码(php),那么为什么不在没有javascript开销的情况下完全剥离它呢?
试试http://php.net/manual/en/domdocument.loadhtml.php
[编辑]如果您想通过id找到特定的elemt,请使用方法http://php.net/manual/en/domdocument.getelementbyid.php
The below code solved it for me, it overwrites the content completely
$dir = "path"; $line = 'texttochange'; $line2 = 'towhatever'; $contents = file_get_contents($dir); $contents = str_replace($line, $line2, $contents); file_put_contents($dir, $contents);
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