我正在尝试获取布局的“视图”。我需要创建按钮监听器等，但我无论如何都无能为力。此外，我使用'ViewPager'来托管选项卡，并使用布局片段。根据我目前的代码，我希望你不需要更多。如果你这样做，请问我。
以下是代码：
package net.dankrushen.filetosms;
import android.app.Dialog;
import android.support.design.widget.TabLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import net.qwertysam.codec.ByteUtil;
import net.qwertysam.percentage.Tasks;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.concurrent.TimeUnit;
public class MainActivity extends AppCompatActivity {
private static MainActivity instance;
public static MainActivity instance(){
return instance;
}
private Button buttonOpenDialog;
private Button buttonUp;
private TextView textFolder;
private TextView fileSelected;
private String sell = "null";
private Button senddata;
private TextView percentage;
private ProgressBar progressBar;
private TextView taskDisplay;
private EditText phoneNum;
private boolean isRunning = false;
//File chooser dialog
private static final int CUSTOM_DIALOG_ID = 0;
private ListView dialog_ListView;
private File root;
private File curFolder;
private List<String> fileList = new ArrayList<>();
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
public void setPercentage(final Tasks task, final int percent) {
this.runOnUiThread(new Thread() {
public void run() {
percentage.setText(percent + "%");
progressBar.setProgress(percent);
taskDisplay.setText(task.title() + " (" + task.getTaskNum() + "/" + task.getTotalTaskNum() + ")");
}
});
}
public void setProcessing(final boolean visible){
this.runOnUiThread(new Thread() {
public void run() {
percentage.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);
taskDisplay.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);
progressBar.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);
}
});
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
View nice = PlaceholderFragment.newInstance(0).getView();
buttonOpenDialog = (Button) nice.findViewById(R.id.opendialog);
buttonOpenDialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog(CUSTOM_DIALOG_ID);
}
});
progressBar = (ProgressBar) nice.findViewById(R.id.progressBar);
percentage = (TextView) nice.findViewById(R.id.percentage);
taskDisplay = (TextView) nice.findViewById(R.id.curProc);
phoneNum = (EditText) nice.findViewById(R.id.phoneNum);
setPercentage(Tasks.IDLE, 0);
setProcessing(false);
root = new File("/storage/");
curFolder = root;
senddata = (Button) nice.findViewById(R.id.send);
senddata.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (!isRunning) {
if (!sell.equals("null")) {
if (!phoneNum.getText().toString().replaceAll("\\D+", "").isEmpty() && phoneNum.getText() != null) {
warningDialog();
} else {
Toast.makeText(MainActivity.this, "Please enter a phone number!", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(MainActivity.this, "Please select a file!", Toast.LENGTH_SHORT).show();
}
} else {
Toast.makeText(MainActivity.this, "Please wait for the current process to finish!", Toast.LENGTH_SHORT).show();
}
}
});
}
private void warningDialog(){
// custom dialog
final Dialog dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.dialogwarn);
dialog.setTitle("Details");
TextView warnTxtFile = (TextView) dialog.findViewById(R.id.warnTxtFile);
warnTxtFile.setText(fileSelected.getText());
TextView warnTxtBytes = (TextView) dialog.findViewById(R.id.warnTxtBytes);
File sellect = new File(sell);
warnTxtBytes.setText(String.valueOf(sellect.length()) + " bytes");
TextView warnTxtMessages = (TextView) dialog.findViewById(R.id.warnTxtMessages);
double massages = Math.ceil(sellect.length()/105)+3;
double messagesNum = (massages == 3 ? massages + 1 : massages);
warnTxtMessages.setText(String.format("%.0f", messagesNum).replace(".0", "") + " messages");
double processTime = Math.ceil((sellect.length() * 0.0000006353240152) + 1)-1;
double fullTime = processTime + messagesNum;
TextView warnTxtEstTime = (TextView) dialog.findViewById(R.id.warnTxtEstTime);
warnTxtEstTime.setText(getTime((long) fullTime));
Button cnclBtn = (Button) dialog.findViewById(R.id.cancelBtn);
// if button is clicked, close the custom dialog
cnclBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
Button contBtn = (Button) dialog.findViewById(R.id.continueBtn);
// if button is clicked, close the custom dialog
contBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Converting file...", Toast.LENGTH_SHORT).show();
isRunning = true;
byteprocessor();
dialog.dismiss();
}
});
dialog.show();
}
@Override
protected Dialog onCreateDialog(int id) {
Dialog dialog = null;
switch (id) {
case CUSTOM_DIALOG_ID:
dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.dialoglayout);
dialog.setTitle("File Chooser");
dialog.setCancelable(true);
dialog.setCanceledOnTouchOutside(true);
textFolder = (TextView) dialog.findViewById(R.id.folder);
buttonUp = (Button) dialog.findViewById(R.id.up);
buttonUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ListDir(curFolder.getParentFile());
}
});
dialog_ListView = (ListView) dialog.findViewById(R.id.dialoglist);
dialog_ListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
File selected = new File(fileList.get(position));
if (selected.isDirectory()) {
ListDir(selected);
} else {
fileSelected = (TextView) findViewById(R.id.fileSelected);
fileSelected.setText(selected.getName());
sell = selected.toString();
Toast.makeText(MainActivity.this, selected.toString() + " selected",
Toast.LENGTH_LONG).show();
dismissDialog(CUSTOM_DIALOG_ID);
}
}
});
break;
}
return dialog;
}
@Override
protected void onPrepareDialog(int id, Dialog dialog) {
super.onPrepareDialog(id, dialog);
switch (id) {
case CUSTOM_DIALOG_ID:
ListDir(curFolder);
break;
}
}
private void ListDir(File f) {
if (f.equals(root)) {
buttonUp.setEnabled(false);
} else {
buttonUp.setEnabled(true);
}
curFolder = f;
textFolder.setText(f.getPath());
File[] files = f.listFiles();
fileList.clear();
for (File file : files) {
if(file.length() != 0) {
fileList.add(file.getPath());
}
}
ArrayAdapter<String> directoryList = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, fileList);
dialog_ListView.setAdapter(directoryList);
}
private void byteprocessor() {
setProcessing(true);
new Thread() {
public void run() {
List<String> encoded = ByteUtil.splitIntoSendables(ByteUtil.encodeBytes(ByteUtil.bytesFromFile(sell)));
SmsManager sms = SmsManager.getDefault();
String phoneNumber = phoneNum.getText().toString().replaceAll("\\D+", "");
System.out.println("Sending Messages: " + encoded.size());
File sellect = new File(sell);
Calendar cal = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
System.out.println( sdf.format(cal.getTime()) );
String firstMessage = "<(<(||\"" + fileSelected.getText() + "\"," + sellect.length() + " bytes," + encoded.size() + " message(s)," + sdf.format(cal.getTime()) + "||";
for(String sendable : splitStringEvery(firstMessage, 140)) {
sms.sendTextMessage(phoneNumber, null, sendable, null, null);
}
for (String toSend : encoded) {
System.out.println("Sending Message: " + toSend);
sms.sendTextMessage(phoneNumber, null, toSend, null, null);
}
sms.sendTextMessage(phoneNumber, null, "||)>)>", null, null);
isRunning = false;
}
}.start();
setProcessing(false);
}
public String getTime(long seconds){
int days = (int) TimeUnit.SECONDS.toDays(seconds);
long hours = TimeUnit.SECONDS.toHours(seconds) - (days *24);
long minute = TimeUnit.SECONDS.toMinutes(seconds) - (TimeUnit.SECONDS.toHours(seconds)* 60);
long second = TimeUnit.SECONDS.toSeconds(seconds) - (TimeUnit.SECONDS.toMinutes(seconds) *60);
return (days == 0 ? "" : days + "d ") + (hours == 0 ? "" : hours + "h ") + (minute == 0 ? "" : minute + "m ") + (second == 0 ? "" : second + "s");
}
public String[] splitStringEvery(String s, int interval) {
int arrayLength = (int) Math.ceil(((s.length() / (double)interval)));
String[] result = new String[arrayLength];
int j = 0;
int lastIndex = result.length - 1;
for (int i = 0; i < lastIndex; i++) {
result[i] = s.substring(j, j + interval);
j += interval;
} //Add the last bit
result[lastIndex] = s.substring(j);
return result;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, 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();
//noinspection SimplifiableIfStatement
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 {
/**
* The fragment argument representing the section number for this
* fragment.
*/
private static final String ARG_SECTION_NUMBER = "section_number";
public PlaceholderFragment() {
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
int sectionNum = getArguments().getInt(ARG_SECTION_NUMBER);
View rootView = (sectionNum == 1 ? inflater.inflate(R.layout.sendfragment, container, false) : inflater.inflate(R.layout.receivefragment, container, false));
return rootView;
}
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position + 1);
}
@Override
public int getCount() {
// Show 2 total pages.
return 2;
}
@Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "Send";
case 1:
return "Receive";
}
return null;
}
}
}
http://pastebin.com/sxcyajNQ＆lt; - 新代码
答案 0 :(得分：0)
要从片段获取视图，您可以使用：
getActivity().findViewById(R.id.abc);
要了解片段中的哪个位置，请研究片段生命周期 - http://developer.android.com/guide/components/fragments.html
答案 1 :(得分：0)
我没有把所有的UI代码都带到onCreateView（）方法中，也没想到它需要使用rootView。最后我和某人聊了聊，然后我全力以赴。