i want to change the color of progressbar as the cursor is moved, but
setProgressDrawable() seems to work only within OnCreate() method, if
i change the ProgressDrawable inside onProgressChanged method
inspecting mSeekBar i can see that the value of Currentdrawable and
ProgressDrawable is updated but the progressbar disappear and it
reappears only when the progressdrawable changes back to the old value
(the one set in the onCreate method)
public void onProgressChanged(SeekBar seekBar, int progress,boolean
fromTouch) {
seekBar.setProgressDrawable(new_drawable);
}
Full code:
public class SeekBar2 extends Activity implements
SeekBar.OnSeekBarChangeListener {
SeekBar mSeekBar;
TextView mProgressText;
TextView mTrackingText;
static LayerDrawable mdrawable_green;
static LayerDrawable mdrawable_blue;
static LayerDrawable mdrawable_red;
enum BarColor {
RED, BLUE, GREEN;
LayerDrawable getDrawable(){
switch(this){
case RED: return mdrawable_red;
case BLUE: return mdrawable_blue;
case GREEN: return mdrawable_green;
default : return mdrawable_red;
}
}
};
BarColor mcolor;
public BarColor getColor() {
return mcolor;
}
public void setColor(SeekBar seekbar,BarColor color) {
this.mcolor = color;
seekbar.setProgressDrawable(color.getDrawable());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mSeekBar = (SeekBar) findViewById(R.id.seek);
mdrawable_green = (LayerDrawable)
this.getResources().getDrawable
(R.drawable.pgreen);
mdrawable_blue = (LayerDrawable)this.getResources().getDrawable
(R.drawable.pblue);
mdrawable_red = (LayerDrawable)this.getResources().getDrawable
(R.drawable.pred);
setColor(mSeekBar ,BarColor.RED);
mSeekBar.setOnSeekBarChangeListener(this);
mProgressText = (TextView) findViewById(R.id.progress);
mTrackingText = (TextView) findViewById(R.id.tracking);
}
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromTouch) {
mProgressText.setText(progress + " " + "seekbar_from_touch"
+ "=" + fromTouch);
BarColor color;
if(progress < 33)
color = BarColor.RED;
else if ((progress>=33) && (progress<66))
color = BarColor.BLUE;
else
color = BarColor.GREEN;
if(color!=mcolor)
setColor(seekBar,color);
}
public void onStartTrackingTouch(SeekBar seekBar) {
mTrackingText.setText("seekbar_tracking_on");
}
public void onStopTrackingTouch(SeekBar seekBar) {
mTrackingText.setText("seekbar_tracking_off");
}
}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<SeekBar android:id="@+id/seek"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="100"
android:progress="0"
android:secondaryProgress="0"
/>
<TextView android:id="@+id/progress"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<TextView android:id="@+id/tracking"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</LinearLayout>
pblue.xml(pred.xml and pgreen.xml are different only for the progress
layer):
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/
android">
<item android:id="@android:id/background">
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff9d9e9d"
android:centerColor="#ff5a5d5a"
android:centerY="0.75"
android:endColor="#ff747674"
android:angle="270"
/>
</shape>
</item>
<item android:id="@android:id/secondaryProgress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270"
/>
</shape>
</clip>
</item>
<item android:id="@android:id/progress">
<clip>
<shape>
<corners android:radius="5dip" />
<gradient
android:startColor="#ff0099CC"
android:centerColor="#ff3399CC"
android:centerY="0.75"
android:endColor="#ff6699CC"
android:angle="270"
/>
</shape>
</clip>
</item>
</layer-list>
Can someone help me?
thanks
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