我正在尝试使用SeekBar更改TextView的文本大小,只有当我增加大小时,它才能正常工作,当减小时,“文本大小”改变很好,但“textview的布局”似乎有您放置的最大高度(文本显示在布局的中心,好像有match_parent属性而不是wrap_content)。
我尝试了很多textview的布局属性组合(它在RelativeLayout中) (H:WRAP_CONT,W:WRAP_CONT / H:MATCH_PAR,W:MATCH_PAR,ALING PARENT TOP TRUE /.....)
有人能帮帮我吗?
编辑:textview应显示在顶部
LAYOUT
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/preview_preview"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ImageView
android:id="@+id/preview_image"
android:layout_width="match_parent"
android:layout_height="match_parent" android:background="@drawable/cuadros_001"/>
<TextView
android:id="@+id/preview_text_top"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="TextView"
android:textColor="#FFFFFF"/>
<TextView
android:id="@+id/preview_text_bottom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="2.5dp"
android:gravity="bottom|center"
android:text="PREVIEW_TEXT_BOTTOM"
android:textColor="#FFFFFF"
android:textSize="25dp" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true"/>
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<GridView
android:id="@+id/preview_gridview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/backgroundtransparencia"
android:gravity="center"
android:horizontalSpacing="5dp"
android:numColumns="3"
android:stretchMode="columnWidth"
android:verticalSpacing="10dp" >
</GridView>
</LinearLayout>
<LinearLayout
android:id="@+id/preview_child_2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
</LinearLayout>
</ViewFlipper>
---搜索条 -
seekbar_toptext =(SeekBar)findViewById(R.id.seekbar_toptext);
seekbar_toptext.setProgress(40);
seekbar_toptext.incrementProgressBy(05);
seekbar_toptext.setMax(100);
seekbar_toptext.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
int topsize;
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
preview_text_top.setTextSize(TypedValue.COMPLEX_UNIT_SP ,progress);
}
});
提前致谢。
答案 0 :(得分:0)
试试此代码......
我希望这会对你有所帮助......
final TextView t1=new TextView(this);
t1.setText("Hello Android");
final SeekBar sk=(SeekBar) findViewById(R.id.seekBar1);
sk.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
// TODO Auto-generated method stub
t1.setTextSize(progress);
Toast.makeText(getApplicationContext(), String.valueOf(progress),Toast.LENGTH_LONG).show();
}
});