我正在尝试在RecyclerView中使用Autosizing TextViews,但是当我滚动几次时,文字变得非常小,以至于它显然无法正常工作。
我的TextView示例:
<?php
if (isset($_GET['update'])) {
$query = mysql_query("UPDATE iekartas SET
iernosauk='$Ierices_Nosaukums', tips='$Tips', razotajs='$Razotajs',
izgatdat='$Izgatavosanas_datums', adrese='$Adrese' where id='$Iekartas_ID'", $connection);
}
$query = mysql_query("select * from iekartas", $connection);
while ($row = mysql_fetch_array($query)) {
echo "<b><a href='iekartas.php?update={$row['Iekartas_ID']}'>{$row['Ierices_Nosaukums']}</a></b>";
echo "<br />";
}
?>
<tr>
<form action="ierices.php" method="post">
<td><input class="checkbox" type="checkbox" id="<?php echo $row['Iekartas_ID'] ?>" name="id[]"></td>
<td> <input type="text" name="iernosauk" value=" <?php echo $row["Ierices_Nosaukums"]; ?>"></td>
<td> <input type="text" name="tips" value=" <?php echo $row["Tips"]; ?>"></td>
<td> <input type="text" name="razotajs" value=" <?php echo $row["Razotajs"]; ?>"></td>
<td> <input type="text" name="izgatdat" value=" <?php echo $row["Izgatavosanas_datums"]; ?>"></td>
<td> <input type="text" name="adrese" value=" <?php echo $row["Adrese"]; ?>"></td>
<td> <input type="hidden" name="id" value=" <?php echo $row["Iekartas_ID"]; ?>"></td>
<?php
$i++;
}
?>
<button type="button" action="update.php" name="updatedb" class="btn btn-danger" id="updatedb" value=update>Atjaunot</button>
</tr>
</form>
我应该以编程方式在其他地方更新此扩展,还是有其他解决方案?
答案 0 :(得分:6)
Android 8.0(API级别26)允许您指示TextView根据TextView的特性和边界自动扩展或收缩文本大小以填充其布局。
注意:如果在XML文件中设置自动调整大小,则不建议使用 使用值&#34; wrap_content&#34;对于layout_width或layout_height TextView的属性。它可能会产生意想不到的结果。
你应该绑定高度
android:layout_height="30dp"
答案 1 :(得分:6)
我看到的一个问题是,将视图高度设置为wrap_content
可以使文本大小变小,但是文本将永远不会再变大。这就是为什么文档建议不要对视图大小使用wrap_content
。但是,我发现如果关闭自动调整大小,将文本大小设置为最大值,然后重新启用自动调整大小,则文本大小将重置为最大大小,并根据需要缩小比例。>
所以我在XML中的视图如下:
<android.support.v7.widget.AppCompatTextView
android:id="@+id/text_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="end"
android:textAllCaps="true"
android:textColor="@android:color/white"
android:textSize="42sp"
app:autoSizeMinTextSize="26dp"
app:autoSizeMaxTextSize="42dp"
app:autoSizeTextType="none"/>
然后将文本绑定到视图时,在ViewHolder
中输入
TextView title = view.findViewById(R.id.text_title);
String titleValue = "Some Title Value";
// Turn off auto-sizing text.
TextViewCompat.setAutoSizeTextTypeWithDefaults(title,
TextViewCompat.AUTO_SIZE_TEXT_TYPE_NONE);
// Bump text size back up to the max value.
title.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 42);
// Set your text as normal.
title.setText(titleValue);
// Post a runnable to re-enable auto-sizing text so that it occurs
// after the view is laid out and measured at max text size.
title.post(new Runnable() {
@Override
public void run() {
TextViewCompat
.setAutoSizeTextTypeUniformWithConfiguration(title,
26, 42, 1, TypedValue.COMPLEX_UNIT_DIP);
}
});
答案 2 :(得分:3)
我将Michael Celey的答案打包到一个类中。参数app:autoSizeMinTextSize
,app:autoSizeMaxTextSize
,app:autoSizeTextType
来自xml。
public class AutosizingTextView extends AppCompatTextView {
private int minTextSize;
private int maxTextSize;
private int granularity;
public AutosizingTextView(Context context) {
super(context);
init();
}
public AutosizingTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public AutosizingTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
minTextSize = TextViewCompat.getAutoSizeMinTextSize(this);
maxTextSize = TextViewCompat.getAutoSizeMaxTextSize(this);
granularity = TextViewCompat.getAutoSizeStepGranularity(this);
}
@Override
public void setText(CharSequence text, BufferType type) {
// this method is called on every setText
disableAutosizing();
super.setText(text, type);
post(this::enableAutosizing); // enable after the view is laid out and measured at max text size
}
private void disableAutosizing() {
TextViewCompat.setAutoSizeTextTypeWithDefaults(this, TextViewCompat.AUTO_SIZE_TEXT_TYPE_NONE);
}
private void enableAutosizing() {
TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(this,
minTextSize, maxTextSize, granularity, TypedValue.COMPLEX_UNIT_PX);
}
}```
答案 3 :(得分:0)
Pavel Haluza的回答方法很棒。但是,它没有用,可能是因为他错过了一行setTextSize(TypedValue.COMPLEX_UNIT_PX, maxTextSize);
。
这是我的更新版本:
public class MyTextView extends AppCompatTextView {
private int minTextSize;
private int maxTextSize;
private int granularity;
public MyTextView(Context context) {
super(context);
init();
}
public MyTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public MyTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
minTextSize = TextViewCompat.getAutoSizeMinTextSize(this);
maxTextSize = TextViewCompat.getAutoSizeMaxTextSize(this);
granularity = Math.max(1, TextViewCompat.getAutoSizeStepGranularity(this));
}
@Override
public void setText(CharSequence text, BufferType type) {
// this method is called on every setText
disableAutoSizing();
setTextSize(TypedValue.COMPLEX_UNIT_PX, maxTextSize);
super.setText(text, type);
post(this::enableAutoSizing); // enable after the view is laid out and measured at max text size
}
private void disableAutoSizing() {
TextViewCompat.setAutoSizeTextTypeWithDefaults(this, TextViewCompat.AUTO_SIZE_TEXT_TYPE_NONE);
}
private void enableAutoSizing() {
TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(this,
minTextSize, maxTextSize, granularity, TypedValue.COMPLEX_UNIT_PX);
}}
答案 4 :(得分:0)
上述解决方案对我不起作用,所以这是我的
public class MyTextView extends AppCompatTextView {
...
@Override
public final void setText(CharSequence text, BufferType type) {
// work around stupid auto size text not *growing* the font size we re binding in a RecyclerView if previous bind caused a small font
int minTextSize = 0, maxTextSize = 0, granularity = 0;
boolean doHack = TextViewCompat.getAutoSizeTextType(this) != TextViewCompat.AUTO_SIZE_TEXT_TYPE_NONE;
if (doHack) {
minTextSize = TextViewCompat.getAutoSizeMinTextSize(this);
maxTextSize = TextViewCompat.getAutoSizeMaxTextSize(this);
if (minTextSize <= 0 || maxTextSize <= minTextSize) { // better than validateAndSetAutoSizeTextTypeUniformConfiguration crashing
if (BuildConfig.DEBUG)
throw new AssertionError("fix ya layout");
doHack = false;
} else {
granularity = TextViewCompat.getAutoSizeStepGranularity(this);
if (granularity < 0)
granularity = 1; // need this else setAutoSizeTextTypeUniformWithConfiguration barfs. TextView.UNSET_AUTO_SIZE_UNIFORM_CONFIGURATION_VALUE = 1.
// make the TextView have 0 size so setAutoSizeTextTypeUniformWithConfiguration won't do calculations until after a layout pass using maxSize
TextViewCompat.setAutoSizeTextTypeWithDefaults(this, TextViewCompat.AUTO_SIZE_TEXT_TYPE_NONE);
setTextSize(TypedValue.COMPLEX_UNIT_PX, maxTextSize);
measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY));
setRight(getLeft());
setBottom(getTop());
requestLayout();
}
}
super.setText(text, type);
if (doHack)
TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(this, minTextSize, maxTextSize, granularity, TypedValue.COMPLEX_UNIT_PX);
}
...
}
答案 5 :(得分:0)
只需.setText(“”)即可重置所需的文本大小。这样可以确保您没有设置textsize,然后立即使用TextView中的先前文本值自动调整大小。像这样:
TextView wordWordTextView = getView().findViewById(R.id.wordWordTextView);
wordWordTextView.setAlpha(0.0f);
wordWordTextView.setText("");
wordWordTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 50);
wordWordTextView.setText(wordStr);
wordWordTextView.animate().alpha(1.0f).setDuration(250);