settext

问题 I have a spinner with three items and I use an XML string-array resource to feed it. When you open an activity the spinner normally shows the first item that's in the array list. I'd like to change that and show the text "Select one" in the spinner, before an item is selected. How can I do that? 回答1: You can do that one of two ways. 1) Add "Select One" as the first item in your xml and code your listener to ignore that as a selection. 2) Create a custom adapter to insert it as the first line,

问题 setText(), setTextsize() and addView is not working. It is shown as cannot resolve symbol type. Intent intent = getIntent(); String message = intent.getStringExtra(MyActivity.EXTRA_MESSAGE); TextView textView = new TextView(this); textView.setTextSize(40); textView.setText(message); RelativeLayout layout = (RelativeLayout) findViewById(R.id.content); layout.addView(textView); 回答1: You can't use methods such as add and find view by id before the layout is inflated. Verifý that setContentView

问题 in this question I am trying to take some input and then posting them to a url and then json parsing the response and then showing the output through textView but my final page is coming blank .. I have attached all my java and xml file and log file { "user_id": "23", "firstname": "", "lastname": "", "email": "9654008791", "isd_code": "91‌​", "mobile": "9654008791", "gender": "", "dob": "0000-00-00", "image": null, "status": "0", ‌​"verification_key": "7062" } Main Activity.java package com

问题 like the title says I'm getting an error when trying to set a text view text from java in my android project, I can't see why. package com.codeherenow.sicalculator; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; import android.widget.SeekBar; public class SICalculatorActivity extends Activity implements SeekBar.OnSeekBarChangeListener{ public double years; public TextView YT = (TextView) findViewById(R.id.Years); @Override protected void onCreate(Bundle

问题 I am setting text in TextView from string resource. Normally, Hebrew works in Right-To-Left format. When I set a text, it sets the text Right-To-Left format in LG, Samsung, Sony Phone but in HTC it does not work. It works in Left-To-Right format in HTC. Even I set Gravity to the TextView in Java file. Text in TextView should be span according to the screen size. For example if it is 320 x 480 then it display in 4 lines but if it is Galaxy Tab then there may be 2 lines. Here is my Code snippet

问题 I'm trying to fill a QTableWidget from a file that was exported by my program, but when I try to set text to the table cells they just ignore me, nothing happens. void MainWindow::on_actionOpen_Project_triggered() { QString line, fileName; fileName = QFileDialog::getOpenFileName(this,tr("Open Project"), "", tr("Project Files (*.project)")); if(!fileName.isEmpty()){ QFile file(fileName); if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) return; QTextStream in(&file); for(int i=0;i<ui-

问题 I need an official list of supported html tags on Android TextView. I'm using textView.setText(Html.fromHtml(label)); but I don't know wich tags are supported. 回答1: Note: This targets API 27. Earlier versions are NOT guaranteed to support the tags seen in this list, and same for later ones (they could be removed). Mark Herscher's comment got me thinking: it there are new tags, but they're not documented in plain-text anywhere. I figured the HTML tags would need to be declared somewhere , if

问题 How can I do getLineCount() of an Edittext in the onCreate() method of an activity, having changed the Edittext's text, like the following: @override public void onCreate(Bundle savedInstanceState){ myEditText.setText("EXAMPLE"); myEditText.getLineCount(); } Because the view has not been drawn yet getLineCount() will always return 0. Is there a way to get around this problem? Thanks! 回答1: Ugh, it's a problem with UI everywhere. You can use a Handler. You'll post a Runnable that will get the

问题 To prevent the infinite loop I did something as ugly as this... @Override protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) { String t = text.toString(); String tt = t.toUpperCase(); if (!t.equals(tt)) { setText(tt); } super.onTextChanged(text, start, lengthBefore, lengthAfter); } Is there any other way to prevent the onTextChanged from being called when changing the text within onTextChanged ? 回答1: You could use flags that specify if the text has

问题 To prevent the infinite loop I did something as ugly as this... @Override protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) { String t = text.toString(); String tt = t.toUpperCase(); if (!t.equals(tt)) { setText(tt); } super.onTextChanged(text, start, lengthBefore, lengthAfter); } Is there any other way to prevent the onTextChanged from being called when changing the text within onTextChanged ? 回答1: You could use flags that specify if the text has