在我的应用程序中，我首先使用textview来显示文本。然后我想证明文本的合理性，但在android中它不可能在textview中证明文本的合理性。为了证明文本的合理性，我正在寻求this link的帮助。我正在关注@Kondzio提供的答案，但它不起作用。我不知道我的代码中有什么不对。
代码 -
public class Benefits extends Activity{
private Button back;
LinearLayout bText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.benefits);
WebView view = new WebView(this);
view.setVerticalScrollBarEnabled(true);
((LinearLayout)findViewById(R.id.bText)).addView(view);
view.loadData(getString(R.string.benef), "text/html", "utf-8");
back.setOnClickListener(new View.OnClickListener(){
public void onClick(View v)
{
finish();
}
});
}
}
XML -
<LinearLayout
android:id="@+id/bText"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="4"
android:gravity="center">
</LinearLayout>
在strings.xml中 -
<string name="benef">
<![CDATA[
<html>
<head></head>
<body style="text-align:justify;color:gray;background-color:black;">
"1.some text\n
2.some text\n
.............
</body>
</html>
]]>
</string>
我将scrollbarenabled设置为true以在我的文本上进行垂直滚动。
答案 0 :(得分：7)
//转换所有语言内容以证明使用html标签。
String youtContentStr = String.valueOf(Html
.fromHtml("<![CDATA[<body style=\"text-align:justify;color:#222222; \">"
+ getResources().getString(R.string.passthe_content)
+ "</body>]]>"));
view.loadData(youtContentStr, "text/html", "utf-8");
修改 要么 使用添加的反斜杠更改代码
<body style=\"text-align:justify;color:gray;background-color:black;\">
答案 1 :(得分：6)
import android.content.Context;
import android.graphics.Canvas;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.widget.TextView;
public class JustifyTextView extends TextView {
private int mLineY;
private int mViewWidth;
public JustifyTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@Override
protected void onDraw(Canvas canvas) {
TextPaint paint = getPaint();
paint.setColor(getCurrentTextColor());
paint.drawableState = getDrawableState();
mViewWidth = getMeasuredWidth();
String text = getText().toString();
mLineY = 0;
mLineY += getTextSize();
Layout layout = getLayout();
for (int i = 0; i < layout.getLineCount(); i++) {
int lineStart = layout.getLineStart(i);
int lineEnd = layout.getLineEnd(i);
String line = text.substring(lineStart, lineEnd);
float width = StaticLayout.getDesiredWidth(text, lineStart, lineEnd, getPaint());
if (needScale(line,i)) {
drawScaledText(canvas, lineStart, line, width);
} else {
canvas.drawText(line, 0, mLineY, paint);
}
mLineY += getLineHeight();
}
}
private void drawScaledText(Canvas canvas, int lineStart, String line, float lineWidth) {
float x = 0;
if (isFirstLineOfParagraph(lineStart, line)) {
String blanks = " ";
canvas.drawText(blanks, x, mLineY, getPaint());
float bw = StaticLayout.getDesiredWidth(blanks, getPaint());
x += bw;
line = line.substring(3);
}
float d = (mViewWidth - lineWidth) / line.length() - 1;
for (int i = 0; i < line.length(); i++) {
String c = String.valueOf(line.charAt(i));
float cw = StaticLayout.getDesiredWidth(c, getPaint());
canvas.drawText(c, x, mLineY, getPaint());
x += cw + d;
}
}
private boolean isFirstLineOfParagraph(int lineStart, String line) {
return line.length() > 3 && line.charAt(0) == ' ' && line.charAt(1) == ' ';
}
private boolean needScale(String line,int lineNumber) {
Layout layout = getLayout();
if (line.length() == 0 || layout.getLineCount() == 1 || lineNumber == (layout.getLineCount() - 1)) {
return false;
} else {
return line.charAt(line.length() - 1) != '\n';
}
}
}
我修改了Sasikumar给出的代码来纠正以下内容。
这是纯文本解决方案。 Html不起作用。没有换行符（\ n）或任何其他字符有效。所有空格都被删除。所以它仅用于有限的纯文本用途。
答案 2 :(得分：5)
将此依赖关系用于justifytext库
compile 'com.uncopt:android.justified:1.0'
和同步gradle
要在文本视图中对齐文本，请在XML中使用它：
<com.uncopt.android.widget.text.justify.JustifiedTextView
android:layout_width="match_parent"
android:id="@+id/t1"
android:padding="5dp"
android:textColor="#303336"
android:textSize="18sp"
android:layout_height="wrap_content"/>
并在Java类中使用它：
JustifiedTextView myMsg = (JustifiedTextView)findViewById(R.id.t1);
myMsg.setText("ur text data for justify");
答案 3 :(得分：1)
public class Main extends Activity {
WebView webView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView) findViewById(R.id.webview);
String text = "<html><body>"
+ "<p align=\"justify\">"
+ getString(R.string.lorem_ipsum)
+ "</p> "
+ "</body></html>";
webView.loadData(text, "text/html", "utf-8");
}
}
main
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<WebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>
答案 4 :(得分：0)
将以下类复制到项目中并从中扩展textview：
JustifiedTextView.java ：
import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Color;
import android.text.SpannableString;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
public class JustifiedTextView extends WebView {
private String core = "<html><body style='text-align:justify;color:rgba(%s);font-size:%dpx;margin: 10px 10px 10px 10px;'>%s</body></html>";
private String textColor = "0,0,0,255";
private String text = "";
private int textSize = 12;
private int backgroundColor = Color.TRANSPARENT;
public JustifiedTextView(Context context) {
super(context);
this.setWebChromeClient(new WebChromeClient() {
});
}
public void setText(String s) {
this.text = s;
// this.setPadding(10, 10, 10, 10);
reloadData();
}
@SuppressLint("NewApi")
private void reloadData() {
// loadData(...) has a bug showing utf-8 correctly. That's why we need
// to set it first.
this.getSettings().setDefaultTextEncodingName("utf-8");
this.loadData(String.format(core, textColor, textSize, text),
"text/html", "utf-8");
// set WebView's background color *after* data was loaded.
super.setBackgroundColor(backgroundColor);
// Hardware rendering breaks background color to work as expected.
// Need to use software renderer in that case.
if (android.os.Build.VERSION.SDK_INT >= 11)
this.setLayerType(WebView.LAYER_TYPE_SOFTWARE, null);
}
public void setTextColor(int hex) {
String h = Integer.toHexString(hex);
int a = Integer.parseInt(h.substring(0, 2), 16);
int r = Integer.parseInt(h.substring(2, 4), 16);
int g = Integer.parseInt(h.substring(4, 6), 16);
int b = Integer.parseInt(h.substring(6, 8), 16);
textColor = String.format("%d,%d,%d,%d", r, g, b, a);
reloadData();
}
public void setBackgroundColor(int hex) {
backgroundColor = hex;
reloadData();
}
public void setTextSize(int textSize) {
this.textSize = textSize;
reloadData();
}
}
你可以像这样使用它：
JustifiedTextView myMsg = new JustifiedTextView(this);
myMsg.setText(msg);
如果您的文本视图是xml，请按以下方式进行编辑：
<com.whatever.JustifiedTextView <!--path to the JustifiedTextView.java -->
android:id="@+id=t1">
</JustifiedTextView>
在您的代码中执行此操作：
JustifiedTextView myMsg = (JustifiedTextView)findViewById(R.id.t1);
myMsg.setText("text");
答案 5 :(得分：0)
首先创建新类JustifyTextView.java，将其对齐Textview文本放在中心。我附上完整的代码
your pakagename;
import android.content.Context;
import android.graphics.Canvas;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.widget.TextView;
public class JustifyTextView extends TextView {
private int mLineY;
private int mViewWidth;
public JustifyTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
}
@Override
protected void onDraw(Canvas canvas) {
TextPaint paint = getPaint();
paint.setColor(getCurrentTextColor());
paint.drawableState = getDrawableState();
mViewWidth = getMeasuredWidth();
String text = (String) getText();
mLineY = 0;
mLineY += getTextSize();
Layout layout = getLayout();
for (int i = 0; i < layout.getLineCount(); i++) {
int lineStart = layout.getLineStart(i);
int lineEnd = layout.getLineEnd(i);
String line = text.substring(lineStart, lineEnd);
float width = StaticLayout.getDesiredWidth(text, lineStart, lineEnd, getPaint());
if (needScale(line)) {
drawScaledText(canvas, lineStart, line, width);
} else {
canvas.drawText(line, 0, mLineY, paint);
}
mLineY += getLineHeight();
}
}
private void drawScaledText(Canvas canvas, int lineStart, String line, float lineWidth) {
float x = 0;
if (isFirstLineOfParagraph(lineStart, line)) {
String blanks = " ";
canvas.drawText(blanks, x, mLineY, getPaint());
float bw = StaticLayout.getDesiredWidth(blanks, getPaint());
x += bw;
line = line.substring(3);
}
float d = (mViewWidth - lineWidth) / line.length() - 1;
for (int i = 0; i < line.length(); i++) {
String c = String.valueOf(line.charAt(i));
float cw = StaticLayout.getDesiredWidth(c, getPaint());
canvas.drawText(c, x, mLineY, getPaint());
x += cw + d;
}
}
private boolean isFirstLineOfParagraph(int lineStart, String line) {
return line.length() > 3 && line.charAt(0) == ' ' && line.charAt(1) == ' ';
}
private boolean needScale(String line) {
if (line.length() == 0) {
return false;
} else {
return line.charAt(line.length() - 1) != '\n';
}
}
}
然后转到xml代码，用此代码替换textview
<your package.JustifyTextView
android:id="@+id/Textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:lineSpacingMultiplier="1.1"
android:text="hai hello how"
/>
答案 6 :(得分：0)
如何在不使用任何库See More code的情况下证明Android中的文字。
创建活动并粘贴以下代码See More
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebView webView= (WebView) findViewById(R.id.webView);
WebSettings webSettings=webView.getSettings();
webSettings.setJavaScriptEnabled(true);
String htmlText = " %s ";
String myData = "<html><body style=\"text-align:justify\">The E-Learning Application is a Mobile based application.
The main objective of this application is to make it interactive
and its ease of use.The main features that the application provides are
online tutorial and tests, once the registered people select their
interested subjects. <br/>
This helps to establish incremental learning process. Users can also
discuss an issue/topic by posting messages in the discussion forum.
Along with this they can also take real time simulations of the most
widely known competitive exams.</body></Html>";
webView.loadData(String.format(htmlText,myData),"text/html","utf-8");
}