安卓常用的Dialog：DialogFragment（Android 官方推荐 : DialogFragment 创建对话框）

骑猪看日落 2024-02-18 21:02 10阅读 0赞

###### 1、 概述 ######

DialogFragment在android 3.0时被引入。是一种特殊的Fragment，用于在Activity的内容之上展示一个模态的对话框。典型的用于：展示警告框，输入框，确认框等等。  
在DialogFragment产生之前，我们创建对话框：一般采用AlertDialog和Dialog。注：官方不推荐直接使用Dialog创建对话框。

###### 2、 好处与用法 ######

使用DialogFragment来管理对话框，当旋转屏幕和按下后退键时可以更好的管理其声明周期，它和Fragment有着基本一致的声明周期。且DialogFragment也允许开发者把Dialog作为内嵌的组件进行重用，类似Fragment（可以在大屏幕和小屏幕显示出不同的效果）。上面会通过例子展示这些好处~

使用DialogFragment至少需要实现onCreateView或者onCreateDIalog方法。onCreateView即使用定义的xml布局文件展示Dialog。onCreateDialog即利用AlertDialog或者Dialog创建出Dialog。

3.应用

第一步：首先自定义一个BaseDialog 继承自 DialogFragment

import android.app.Dialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.os.Handler;

import android.os.Looper;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v4.app.DialogFragment;

import android.support.v4.app.FragmentManager;

import android.view.KeyEvent;

import android.view.LayoutInflater;

import android.view.MotionEvent;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.view.WindowManager;

import android.widget.RelativeLayout;

import java.util.List;

import butterknife.ButterKnife;

import cool.monkey.android.R;

public abstract class BaseDialog extends DialogFragment \{

protected boolean mDisableBackPress;

private boolean mEnableTouchCancel;

private boolean mIsShowing;

private boolean mIsAdded;

private List<Integer> mImgList;

protected Handler mHandler;

protected abstract int getLayoutResId();

//控制手机默认Back物理返回键是否Work

public void disableBackPress(boolean disableBackPress) \{

this.mDisableBackPress = disableBackPress;

public void setEnableTouchCancel(boolean mEnableTouchCancel) \{

this.mEnableTouchCancel = mEnableTouchCancel;

@Nullable

@Override

public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) \{

View view = inflater.inflate(getLayoutResId(), container, false);

ButterKnife.bind(this, view);

mIsAdded = true;

return view;

@Override

public void onViewCreated(View view, @Nullable Bundle savedInstanceState) \{

super.onViewCreated(view, savedInstanceState);

View rootView = getView();

if (rootView != null) \{

rootView.setOnTouchListener(new View.OnTouchListener() \{

@Override

public boolean onTouch(View v, MotionEvent event) \{

if (mEnableTouchCancel) \{

dismiss();

return true;

\} else \{

return false;

\});

@NonNull

@Override

public Dialog onCreateDialog(Bundle savedInstanceState) \{

// the content

final RelativeLayout root = new RelativeLayout(getActivity());

root.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH\_PARENT, ViewGroup.LayoutParams.MATCH\_PARENT));

// creating the fullscreen dialog

final Dialog dialog = new Dialog(getActivity());

dialog.requestWindowFeature(Window.FEATURE\_NO\_TITLE);

dialog.getWindow().clearFlags(WindowManager.LayoutParams.FLAG\_DIM\_BEHIND);

dialog.setContentView(root);

dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);

dialog.getWindow().setLayout(ViewGroup.LayoutParams.MATCH\_PARENT, ViewGroup.LayoutParams.MATCH\_PARENT);

dialog.getWindow().getAttributes().windowAnimations = R.style.DialogScaleAnimation;

// listener for back press

dialog.setOnKeyListener(new Dialog.OnKeyListener() \{

@Override

public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) \{

if (mDisableBackPress && keyCode == KeyEvent.KEYCODE\_BACK && event.getAction() == KeyEvent.ACTION\_DOWN) \{

// disable back presse

onBackPressed();

return true;

\} else \{

return false;

\});

return dialog;

protected void onBackPressed() \{\}

public void tryRecover(FragmentManager fm) \{

if (mIsShowing) \{

tryShow(fm);

\} else \{

tryHide();

public void tryShow(FragmentManager fm) \{

if (!hasSavedInstanceState() && !mIsAdded) \{

try \{

show(fm, getPrivateTag());

mIsAdded = true;

\} catch (Exception e) \{

e.printStackTrace();

mIsShowing = true;

public void tryHide() \{

if (!hasSavedInstanceState() && mIsAdded) \{

mIsAdded = false;

super.dismiss();

mIsShowing = false;

@Override

public void onDismiss(DialogInterface dialog) \{

mIsAdded = false;

mIsShowing = false;

super.onDismiss(dialog);

@Override

public void dismiss() \{

tryHide();

protected boolean hasSavedInstanceState() \{

return false;

private String getPrivateTag() \{

return getClass().toString();

@Override

public void onDestroyView() \{

mIsAdded = false;

super.onDestroyView();

public Handler getHandler() \{

if (mHandler == null) \{

synchronized (this) \{

if (mHandler == null) \{

mHandler = new Handler(Looper.getMainLooper());

return mHandler;

public void doInUI(Runnable runnable) \{

doInUI(runnable, 0);

public void doInUI(Runnable runnable, long delayMillis) \{

getHandler().postDelayed(runnable, delayMillis);

2.创建具体功能的Dialog

由于DialogFragment 本身就是继承自Fragment 所以用法和Fragment 一样

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

import butterknife.BindView;

import butterknife.ButterKnife;

import butterknife.OnClick;

import butterknife.Unbinder;

import cool.monkey.android.R;

import cool.monkey.android.base.BaseDialog;

public class NameInvalidDialog extends BaseDialog \{

@BindView(R.id.tv\_ok\_name\_invalid\_dialog) TextView mOk;

private NameInvalidDialogListener nameInvalidDialogListener;

Unbinder unbinder;

public void setNameInvalidDialogListener(NameInvalidDialogListener nameInvalidDialogListener) \{

this.nameInvalidDialogListener = nameInvalidDialogListener;

public interface NameInvalidDialogListener \{

void onHide();

@Override

protected int getLayoutResId() \{

return R.layout.dialog\_name\_invialid;

@Override

public void onViewCreated(View view, @Nullable Bundle savedInstanceState) \{

super.onViewCreated(view, savedInstanceState);

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) \{

View rootView = super.onCreateView(inflater, container, savedInstanceState);

unbinder = ButterKnife.bind(this, rootView);

return rootView;

@Override

public void onDestroyView() \{

super.onDestroyView();

unbinder.unbind();

@OnClick(R.id.tv\_ok\_name\_invalid\_dialog)

public void onOkClicked(View view) \{

if (nameInvalidDialogListener != null) \{

nameInvalidDialogListener.onHide();

tryHide();

3.在用到的地方展示

public void showDialog() \{

NameInvalidDialog nameInvalidDialog = new NameInvalidDialog();

nameInvalidDialog.tryShow(getActivity().getSupportFragmentManager());

GitHub: https://github.com/HuaDanJson

安卓常用的Dialog：DialogFragment（Android 官方推荐 : DialogFragment 创建对话框）

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