Android Open Source - akrellm Ambil Warna Preference

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License

The source code is released under:

Copyright (c) 2012, Tim Edwards All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ...

Java Source Code

package yuku.ambilwarna.widget;
//from  w  ww.  j  av a2s. co  m
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Parcel;
import android.os.Parcelable;
import android.preference.Preference;
import android.util.AttributeSet;
import android.view.View;

import yuku.ambilwarna.AmbilWarnaDialog;
import yuku.ambilwarna.R;

public class AmbilWarnaPreference extends Preference {
  int value;

  public AmbilWarnaPreference(Context context, AttributeSet attrs) {
    super(context, attrs);
    setWidgetLayoutResource(R.layout.ambilwarna_pref_widget);
  }

  @Override protected void onBindView(View view) {
    super.onBindView(view);

    // Set our custom views inside the layout
    final View kotak = view.findViewById(R.id.ambilwarna_pref_widget_kotak);
    if (kotak != null) {
      kotak.setBackgroundColor(value);
    }
  }

  @Override protected void onClick() {
    new AmbilWarnaDialog(getContext(), value, new AmbilWarnaDialog.OnAmbilWarnaListener() {
      @Override public void onOk(AmbilWarnaDialog dialog, int color) {
        if (!callChangeListener(color)) return; // They don't want the value to be set
        value = color;
        persistInt(value);
        notifyChanged();
      }

      @Override public void onCancel(AmbilWarnaDialog dialog) {
        // nothing to do
      }
    }).show();
  }

  public void forceSetValue(int value) {
    this.value = value;
    persistInt(value);
    notifyChanged();
  }

  @Override protected Object onGetDefaultValue(TypedArray a, int index) {
    // This preference type's value type is Integer, so we read the default value from the attributes as an Integer.
    return a.getInteger(index, 0);
  }

  @Override protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
    if (restoreValue) { // Restore state
      value = getPersistedInt(value);
    } else { // Set state
      int value = (Integer) defaultValue;
      this.value = value;
      persistInt(value);
    }
  }

  /*
   * Suppose a client uses this preference type without persisting. We
   * must save the instance state so it is able to, for example, survive
   * orientation changes.
   */
  @Override protected Parcelable onSaveInstanceState() {
    final Parcelable superState = super.onSaveInstanceState();
    if (isPersistent()) return superState; // No need to save instance state since it's persistent

    final SavedState myState = new SavedState(superState);
    myState.value = value;
    return myState;
  }

  @Override protected void onRestoreInstanceState(Parcelable state) {
    if (!state.getClass().equals(SavedState.class)) {
      // Didn't save state for us in onSaveInstanceState
      super.onRestoreInstanceState(state);
      return;
    }

    // Restore the instance state
    SavedState myState = (SavedState) state;
    super.onRestoreInstanceState(myState.getSuperState());
    this.value = myState.value;
    notifyChanged();
  }

  /**
   * SavedState, a subclass of {@link BaseSavedState}, will store the state
   * of MyPreference, a subclass of Preference.
   * <p>
   * It is important to always call through to super methods.
   */
  private static class SavedState extends BaseSavedState {
    int value;

    public SavedState(Parcel source) {
      super(source);
      value = source.readInt();
    }

    @Override public void writeToParcel(Parcel dest, int flags) {
      super.writeToParcel(dest, flags);
      dest.writeInt(value);
    }

    public SavedState(Parcelable superState) {
      super(superState);
    }

    @SuppressWarnings("unused") public static final Parcelable.Creator<SavedState> CREATOR = new Parcelable.Creator<SavedState>() {
      public SavedState createFromParcel(Parcel in) {
        return new SavedState(in);
      }

      public SavedState[] newArray(int size) {
        return new SavedState[size];
      }
    };
  }
}

Java Source Code List

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