一个简单的自定义Dialog

Posted 2022-12-08 魏军强

在平时的开发中，我们可能时常需要自定义Dialog,比如常见的需求，通知提示用户的dialog,第二种是从底部弹出的dialog,第三种是带输入框的dialog等。下面就是对一个自定义dialog的简单的封装。

直接看效果，不会作图，图都是网上找的。

1,看普通的提示框效果，我只是展示效果，界面并不是很详细

2，从底部弹出效果

3，带输入控件的弹出效果，自动启动输入法

下面时自定义的CustomDialog类：

/**
 * Created by wjq on 2017/5/16.
 */

public class CustomDialog extends Dialog

    private Context context;
    private int height, width;
    private boolean cancelTouchout;
    private View view;
    private int mLocation; //dialog从哪里弹出
    private int dialogAnim; //dialog显示隐藏动画


    private CustomDialog(Builder builder) 
        super(builder.context);
        context = builder.context;
        height = builder.height;
        width = builder.width;
        mLocation = builder.location;
        cancelTouchout = builder.cancelTouchout;
        view = builder.view;
    


    private CustomDialog(Builder builder, int resStyle) 
        super(builder.context, resStyle);
        context = builder.context;
        height = builder.height;
        width = builder.width;
        mLocation = builder.location;
        cancelTouchout = builder.cancelTouchout;
        view = builder.view;
    

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);

        setContentView(view);

        setCanceledOnTouchOutside(cancelTouchout);

        Window win = getWindow();
        WindowManager.LayoutParams lp = win.getAttributes();
        lp.gravity = mLocation;
        lp.height = height;
        lp.width = width;
        win.setAttributes(lp);
    

    public static final class Builder 

        private Context context;
        private int height, width;
        private boolean cancelTouchout;
        private View view;
        private int resStyle = -1;  //dialog显示样式文件
        private int location = Gravity.CENTER; //默认从中间弹出
        private int animStyle = -1;   //dialog进入及关闭时动画的样式文件


        public Builder(Context context) 
            this.context = context;
        

        public Builder view(int resView) 
            view = LayoutInflater.from(context).inflate(resView, null);
            return this;
        

        public Builder heightpx(int val) 
            height = val;
            return this;
        

        public Builder widthpx(int val) 
            width = val;
            return this;
        

        public Builder heightdp(int val) 
            height = DensityUtil.dip2px(context, val);
            return this;
        

        public Builder widthdp(int val) 
            width = DensityUtil.dip2px(context, val);
            return this;
        

        public Builder heightDimenRes(int dimenRes) 
            height = context.getResources().getDimensionPixelOffset(dimenRes);
            return this;
        

        public Builder widthDimenRes(int dimenRes) 
            width = context.getResources().getDimensionPixelOffset(dimenRes);
            return this;
        

        public Builder style(int resStyle) 
            this.resStyle = resStyle;
            return this;
        

        public Builder dialogStyle()
            this.animStyle = resStyle;
            return this;
        

        public Builder location(int location)
            this.location = location;
            return this;
        

        public Builder cancelTouchout(boolean val) 
            cancelTouchout = val;
            return this;
        

        public Builder addViewOnclick(int viewRes,View.OnClickListener listener)
            view.findViewById(viewRes).setOnClickListener(listener);
            return this;
        


        public CustomDialog build() 
            if (resStyle != -1) 
                return new CustomDialog(this, resStyle);
             else 
                return new CustomDialog(this);
            
        
    

当没有输入控件时Dialog样式

    <style name="Dialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowBackground">@color/full_transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">false</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:backgroundDimEnabled">true</item>
    </style>

当有输入控件时Dialog样式

    <style name="inputDialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowBackground">@color/full_transparent</item>
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">false</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:backgroundDimEnabled">true</item>
        <!--下面这个是针对带输入内容的dialog时设置输入法自动弹出-->
        <item name="android:windowSoftInputMode">adjustResize|stateAlwaysVisible</item>
    </style>

整个使用该自定义Dialog的类如下：

/***
 * create by wjq
 */
public class MainActivity extends AppCompatActivity implements View.OnClickListener 
    Button btn_dialog_one;
    Button btn_dialog_two;
    Button btn_dialog_three;
    CustomDialog dialog_one;
    CustomDialog dialog_two;
    CustomDialog dialog_three;
    CustomDialog.Builder builder;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn_dialog_one = (Button) findViewById(R.id.btn_dialog_one);
        btn_dialog_two = (Button) findViewById(R.id.btn_dialog_two);
        btn_dialog_three = (Button) findViewById(R.id.btn_dialog_three);
        btn_dialog_one.setOnClickListener(this);
        btn_dialog_two.setOnClickListener(this);
        btn_dialog_three.setOnClickListener(this);
        builder = new CustomDialog.Builder(this);
    

    @Override
    public void onClick(View v) 
        switch (v.getId()) 
            case R.id.btn_dialog_one:
                showDialogOne();
                break;
            case R.id.btn_dialog_two:
                showDialogtwo();
                break;
            case R.id.btn_dialog_three:
                showDialogthree();
                break;
        
    

    private void showDialogthree() 
        dialog_three = builder.style(R.style.inputDialog)
                .heightDimenRes(R.dimen.dialog_height)
                .widthDimenRes(R.dimen.dialog_width)
                .cancelTouchout(true)
                .view(R.layout.dialog_three)
                .build();
        dialog_three.show();
    

    private void showDialogOne() 
        dialog_one = builder.style(R.style.Dialog)  //Dialog的样式
                .heightDimenRes(R.dimen.dialog_height) //Dialog高
                .widthDimenRes(R.dimen.dialog_width)   //Dialog宽
                .cancelTouchout(true)           //点击Dialog外面，Dialog是否关闭
                .view(R.layout.dialog_one)      //Dialog布局文件
                .build();
        dialog_one.show();
    

    private void showDialogtwo() 
        dialog_one = builder.style(R.style.Dialog)
                .heightDimenRes(R.dimen.dialog_height)
                .widthDimenRes(R.dimen.dialog_width)
                .location(Gravity.BOTTOM)
                .cancelTouchout(true)
                .view(R.layout.dialog_two)
                .build();
        dialog_one.show();
    

上面就是对Dialog的简单封装。完整demo下载DialogDemo