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added a listener to handle onBackPressed event directly from Dialog #320

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added a listener to handle onBackPressed event directly from Dialog #320

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40 changes: 33 additions & 7 deletions MaterialDesign/src/com/gc/materialdesign/widgets/Dialog.java
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Original file line number Diff line number Diff line change
@@ -1,7 +1,9 @@
package com.gc.materialdesign.widgets;

import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
Expand All @@ -15,7 +17,7 @@
import com.gc.materialdesign.R;
import com.gc.materialdesign.views.ButtonFlat;

public class Dialog extends android.app.Dialog{
public class Dialog extends android.app.Dialog implements DialogInterface.OnKeyListener {

Context context;
View view;
Expand All @@ -32,6 +34,7 @@ public class Dialog extends android.app.Dialog{

View.OnClickListener onAcceptButtonClickListener;
View.OnClickListener onCancelButtonClickListener;
OnKeyDownListener onKeyDownListener;


public Dialog(Context context,String title, String message) {
Expand All @@ -49,6 +52,12 @@ public void addCancelButton(String buttonCancelText, View.OnClickListener onCanc
this.buttonCancelText = buttonCancelText;
this.onCancelButtonClickListener = onCancelButtonClickListener;
}

public void setOnKeyDownListener(OnKeyDownListener onKeyDownListener) {
if (onKeyDownListener != null) {
this.onKeyDownListener = onKeyDownListener;
}
}


@Override
Expand Down Expand Up @@ -84,8 +93,8 @@ public boolean onTouch(View v, MotionEvent event) {
@Override
public void onClick(View v) {
dismiss();
if(onAcceptButtonClickListener != null)
onAcceptButtonClickListener.onClick(v);
if (onAcceptButtonClickListener != null)
onAcceptButtonClickListener.onClick(v);
}
});

Expand All @@ -103,11 +112,27 @@ public void onClick(View v) {
}
});
}

setOnKeyListener(this);
}


@Override
public boolean onKey(DialogInterface dialogInterface, int keyCode, KeyEvent keyEvent) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if(keyEvent.getAction() != KeyEvent.ACTION_DOWN) {
dismiss();
if (onKeyDownListener != null) {
onKeyDownListener.onBackPressed();
}
return true;
}
}

return false;
}

@Override
public void show() {
// TODO 自动生成的方法存根
super.show();
// set dialog enter animations
view.startAnimation(AnimationUtils.loadAnimation(context, R.anim.dialog_main_show_amination));
Expand Down Expand Up @@ -215,6 +240,7 @@ public void run() {
backView.startAnimation(backAnim);
}



public interface OnKeyDownListener {
void onBackPressed();
}
}