我有一个自定义按钮,并通过编程方式更改其按下和默认颜色.
public class CustomApplicationButton extends Button {
public CustomApplicationButton(Context context) {
this(context, 0, 0, 0);
}
public CustomApplicationButton(Context context, int topDrawableResId, int outlineDefaultColorId, int outlinePressedColorId) {
super(context);
// set width and height
LinearLayout.LayoutParams params = new LayoutParams(
context.getResources().getDimensionPixelSize(R.dimen.sr_application_button_width),
context.getResources().getDimensionPixelSize(R.dimen.sr_application_button_height));
setLayoutParams(params);
// set drawable top icon
if (topDrawableResId != 0) {
setCompoundDrawablesWithIntrinsicBounds(0, topDrawableResId, 0, 0);
}
// set background and outline color
int strokeWidth = context.getResources().getDimensionPixelSize(R.dimen.sr_launcher_button_stroke_size);
// unpressed state drawable
LayerDrawable defaultLayers = (LayerDrawable) context.getResources().getDrawable(
R.drawable.btn_launcher_shape_default);
GradientDrawable defaultShapeOutline = (GradientDrawable) defaultLayers.findDrawableByLayerId(R.id.outline_default);
defaultShapeOutline.setStroke(strokeWidth, context.getResources().getColor(outlineDefaultColorId));
// pressed state drawable
LayerDrawable pressedLayers = (LayerDrawable) context.getResources().getDrawable(
R.drawable.btn_launcher_shape_pressed);
GradientDrawable pressedShapeOutline = (GradientDrawable) pressedLayers.findDrawableByLayerId(R.id.outline_pressed);
pressedShapeOutline.setStroke(strokeWidth, context.getResources().getColor(outlinePressedColorId));
// set states
StateListDrawable states = new StateListDrawable();
states.addState(new int[] {android.R.attr.state_pressed}, pressedLayers);
states.addState(new int[] { }, defaultLayers);
// set background
this.setBackground(states);
}
}
然后,将此按钮添加到我的活动中,里面有一个Linearlayout.
public class MainActivity extends Activity {
private LinearLayout applicationPanel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
applicationPanel = (LinearLayout) findViewById(R.id.application_panel);
ssPanel = (LinearLayout) findViewById(R.id.ss_panel);
CustomApplicationButton btnLauncherApp = new CustomApplicationButton(this, R.drawable.ic_application,
R.color.application_green_default_color, R.color.application_green_pressed_color);
btnLauncherApp.setText("Button 1");
applicationPanel.addView(btnLauncherApp);
btnLauncherApp = new CustomApplicationButton(this, R.drawable.ic_camera,
R.color.camera_blue_default_color, R.color.camera_blue_pressed_color);
btnLauncherApp.setText("Button 2");
applicationPanel.addView(btnLauncherApp);
btnLauncherApp = new CustomApplicationButton(this, R.drawable.ic_browser,
R.color.browser_gray_default_color, R.color.browser_gray_pressed_color);
btnLauncherApp.setText("Button 3");
applicationPanel.addView(btnLauncherApp);
}
}
我的问题是所有3个按钮都有不同的默认笔触颜色,但按下的笔划颜色总是最后添加按钮颜色.
总结一下;
两张图片千言万语:)
解决方法:
正如文档中明确提到的:
"Note: changing this property will affect all instances of a drawable loaded from a resource. It is recommended to invoke mutate() before changing this property."
因此,如果您在每个setStroke()之前调用mutate(),您的问题将得到解决.
defaultShapeOutline.mutate();
defaultShapeOutline.setStroke(strokeWidth, context.getResources().getColor(outlineDefaultColorId));