你如何得到一个TextView的文本是正当的(与文本flush在左边和右手边)?
我在这里找到了一个可能的解决方案，但它不起作用(即使您将vertical-center更改为center_vertical等)。
当前回答
为了在android中证明文本，我使用了WebView
setContentView(R.layout.main);
WebView view = new WebView(this);
view.setVerticalScrollBarEnabled(false);
((LinearLayout)findViewById(R.id.inset_web_view)).addView(view);
view.loadData(getString(R.string.hello), "text/html; charset=utf-8", "utf-8");
和html。
<string name="hello">
<![CDATA[
<html>
<head></head>
<body style="text-align:justify;color:gray;background-color:black;">
Lorem ipsum dolor sit amet, consectetur
adipiscing elit. Nunc pellentesque, urna
nec hendrerit pellentesque, risus massa
</body>
</html>
]]>
</string>
我还不能上传图片来证明它，但“它对我有用”。
其他回答
在xml文件中使用此属性即可
android:justificationMode="inter_word"
有一个自定义视图来解决这个问题，这个自定义文本视图支持有理文本视图。
战利品在这:justfiedtextview
import java.util.ArrayList;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.text.TextPaint;
import android.view.View;
public class JustifiedTextView extends View {
String text;
ArrayList<Line> linesCollection = new ArrayList<Line>();
TextPaint textPaint;
Typeface font;
int textColor;
float textSize = 42f, lineHeight = 57f, wordSpacing = 15f, lineSpacing = 15f;
float onBirim, w, h;
float leftPadding, rightPadding;
public JustifiedTextView(Context context, String text) {
super(context);
this.text = text;
init();
}
private void init() {
textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG);
textColor = Color.BLACK;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (font != null) {
font = Typeface.createFromAsset(getContext().getAssets(), "font/Trykker-Regular.ttf");
textPaint.setTypeface(font);
}
textPaint.setColor(textColor);
int minw = getPaddingLeft() + getPaddingRight() + getSuggestedMinimumWidth();
w = resolveSizeAndState(minw, widthMeasureSpec, 1);
h = MeasureSpec.getSize(widthMeasureSpec);
onBirim = 0.009259259f * w;
lineHeight = textSize + lineSpacing;
leftPadding = 3 * onBirim + getPaddingLeft();
rightPadding = 3 * onBirim + getPaddingRight();
textPaint.setTextSize(textSize);
wordSpacing = 15f;
Line lineBuffer = new Line();
this.linesCollection.clear();
String[] lines = text.split("\n");
for (String line : lines) {
String[] words = line.split(" ");
lineBuffer = new Line();
float lineWidth = leftPadding + rightPadding;
float totalWordWidth = 0;
for (String word : words) {
float ww = textPaint.measureText(word) + wordSpacing;
if (lineWidth + ww + (lineBuffer.getWords().size() * wordSpacing) > w) {// is
lineBuffer.addWord(word);
totalWordWidth += textPaint.measureText(word);
lineBuffer.setSpacing((w - totalWordWidth - leftPadding - rightPadding) / (lineBuffer.getWords().size() - 1));
this.linesCollection.add(lineBuffer);
lineBuffer = new Line();
totalWordWidth = 0;
lineWidth = leftPadding + rightPadding;
} else {
lineBuffer.setSpacing(wordSpacing);
lineBuffer.addWord(word);
totalWordWidth += textPaint.measureText(word);
lineWidth += ww;
}
}
this.linesCollection.add(lineBuffer);
}
setMeasuredDimension((int) w, (int) ((this.linesCollection.size() + 1) * lineHeight + (10 * onBirim)));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawLine(0f, 10f, getMeasuredWidth(), 10f, textPaint);
float x, y = lineHeight + onBirim;
for (Line line : linesCollection) {
x = leftPadding;
for (String s : line.getWords()) {
canvas.drawText(s, x, y, textPaint);
x += textPaint.measureText(s) + line.spacing;
}
y += lineHeight;
}
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Typeface getFont() {
return font;
}
public void setFont(Typeface font) {
this.font = font;
}
public float getLineHeight() {
return lineHeight;
}
public void setLineHeight(float lineHeight) {
this.lineHeight = lineHeight;
}
public float getLeftPadding() {
return leftPadding;
}
public void setLeftPadding(float leftPadding) {
this.leftPadding = leftPadding;
}
public float getRightPadding() {
return rightPadding;
}
public void setRightPadding(float rightPadding) {
this.rightPadding = rightPadding;
}
public void setWordSpacing(float wordSpacing) {
this.wordSpacing = wordSpacing;
}
public float getWordSpacing() {
return wordSpacing;
}
public float getLineSpacing() {
return lineSpacing;
}
public void setLineSpacing(float lineSpacing) {
this.lineSpacing = lineSpacing;
}
class Line {
ArrayList<String> words = new ArrayList<String>();
float spacing = 15f;
public Line() {
}
public Line(ArrayList<String> words, float spacing) {
this.words = words;
this.spacing = spacing;
}
public void setSpacing(float spacing) {
this.spacing = spacing;
}
public float getSpacing() {
return spacing;
}
public void addWord(String s) {
words.add(s);
}
public ArrayList<String> getWords() {
return words;
}
}
}
将上面的类添加到你的src文件夹中，并使用这个示例代码添加到你的布局中:
JustifiedTextView jtv= new JustifiedTextView(getApplicationContext(), "Lorem ipsum dolor sit amet... ");
LinearLayout place = (LinearLayout) findViewById(R.id.book_profile_content);
place.addView(jtv);
你可以在github中使用jusfiedtextview for Android项目。这是一个自定义视图，为您模拟正确的文本。它支持Android 2.0+和从右向左的语言。
我是这么做的，我认为是我能做到的最优雅的方式。有了这个解决方案，你只需要在你的布局中做的事情是:
添加一个额外的XMLNS声明 改变你的TextViews源文本命名空间从android到你的新命名空间 用x.y.z.JustifiedTextView替换你的textview
这是代码。在我的手机上运行得非常好(Galaxy Nexus Android 4.0.2, Galaxy Teos Android 2.1)。当然，您可以随意用您的包名替换我的包名。
/资产/ justified_textview.css:
body {
font-size: 1.0em;
color: rgb(180,180,180);
text-align: justify;
}
@media screen and (-webkit-device-pixel-ratio: 1.5) {
/* CSS for high-density screens */
body {
font-size: 1.05em;
}
}
@media screen and (-webkit-device-pixel-ratio: 2.0) {
/* CSS for extra high-density screens */
body {
font-size: 1.1em;
}
}
/res/values/attrs.xml：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="JustifiedTextView">
<attr name="text" format="reference" />
</declare-styleable>
</resources>
res / layout / test.xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:myapp="http://schemas.android.com/apk/res/net.bicou.myapp"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<net.bicou.myapp.widget.JustifiedTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
myapp:text="@string/surv1_1" />
</LinearLayout>
</ScrollView>
/src/net/bicou/myapp/widget/JustifiedTextView.java：
package net.bicou.myapp.widget;
import net.bicou.myapp.R;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import android.webkit.WebView;
public class JustifiedTextView extends WebView {
public JustifiedTextView(final Context context) {
this(context, null, 0);
}
public JustifiedTextView(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public JustifiedTextView(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
if (attrs != null) {
final TypedValue tv = new TypedValue();
final TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.JustifiedTextView, defStyle, 0);
if (ta != null) {
ta.getValue(R.styleable.JustifiedTextView_text, tv);
if (tv.resourceId > 0) {
final String text = context.getString(tv.resourceId).replace("\n", "<br />");
loadDataWithBaseURL("file:///android_asset/",
"<html><head>" +
"<link rel=\"stylesheet\" type=\"text/css\" href=\"justified_textview.css\" />" +
"</head><body>" + text + "</body></html>",
"text/html", "UTF8", null);
setTransparentBackground();
}
}
}
}
public void setTransparentBackground() {
try {
setLayerType(View.LAYER_TYPE_SOFTWARE, null);
} catch (final NoSuchMethodError e) {
}
setBackgroundColor(Color.TRANSPARENT);
setBackgroundDrawable(null);
setBackgroundResource(0);
}
}
我们需要将渲染设置为软件，以便在Android 3+上获得透明的背景。因此，老版本的Android会出现“试接”现象。
希望这能有所帮助!
PS:为了得到预期的行为，请不要将此添加到Android 3+上的整个活动中: android: hardwareAccelerated = " false "
我不认为Android支持完全的理由。
更新2018-01-01:Android 8.0+支持TextView对齐模式。
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