关于android:Android-基本Dialog和自定义Dialog

Android 根本Dialog和自定义Dialog

Dialog类是对话框的基类,但你应该防止间接实例化Dialog ,能够应用子类
1.AlertDialog 此对话框能够显示题目,最多三个按钮,可抉择列表或自定义布局View.
2.DatePickerDialog或TimePickerDialog 此对话框带有容许用户抉择日期或工夫的预约义布局
3.留神:Android 蕴含另一种名为 ProgressDialog 的对话框类,该类可显示带有进度条的对话框。此微件已弃用,因为它会在显示进度的状况下阻止用户与利用互动。如果须要批示加载进度或不确定的进度,您应遵循进度和 Activity的设计准则,并在布局中应用ProgressBar,而非 ProgressDialog。
一:创立AlertDialog
1.创立结构器AlertDialog.Builder的对象;
2.通过结构器对象调用setTitle、setMessage、setIcon等办法结构对话框的题目、信息和图标等内容;
3.依据须要调用setPositive/Negative/NeutralButton()办法设置侧面按钮、负面按钮和中立按钮;
4.调用结构器对象的create办法创立AlertDialog对象;
5.AlertDialog对象调用show办法,让对话框在界面上显示。
注:AlertDialog.Builder本人也有一个show办法,能够显示对话框,所以下面的第4、第5步能够简化为一步
二:创立两个显示2个按钮的Dialog

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">
 <Button 
 android:id="@+id/btn_two"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="最一般的 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_three"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="三个按钮的 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_list"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="列表 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_multi_select"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="多选 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_single_select"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="单选 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_waiting"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="期待 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_loading"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="加载 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_input"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="输出 dialog" 
 android:textAllCaps="false" />
 <Button 
 android:id="@+id/btn_my_style"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:text="自定义 dialog" 
 android:textAllCaps="false" />
</LinearLayout>

FristActivity中创立显示2个按钮dialog

private AlertDialog.Builder builder;

/**
 * 显示两个按钮
 */
private void showTwo() {
    builder = new AlertDialog.Builder(this)
            .setIcon(R.mipmap.ic_launcher)
            .setTitle("两个按钮的dialog")
            .setMessage("我是两个按钮的dialog内容")
            .setCancelable(true)//点击对话框以外的区域是否让对话框隐没
 .setPositiveButton("确定", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    //ToDo: 你想做的事件
 Toast.makeText(FirstActivity.this, "确定按钮", Toast.LENGTH_LONG).show();
 }
            }).setNegativeButton("勾销", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    //ToDo: 你想做的事件
 Toast.makeText(FirstActivity.this, "敞开按钮", Toast.LENGTH_LONG).show();
 // dialogInterface.dismiss();
 }
            });
 builder.create().show();
}

成果:

三:三个按钮的Dialog

private void showThree() {
    /**
 * 三个按钮的 dialog
 */
 AlertDialog.Builder builder = new AlertDialog.Builder(this);
 builder.setIcon(R.mipmap.ic_launcher)
            .setTitle("三个按钮dialog题目")
            .setMessage("三个按钮dialog内容")
            .setPositiveButton("确定(踊跃)", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    //ToDo: 你想做的事件
 Toast.makeText(FirstActivity.this, "确定按钮", Toast.LENGTH_LONG).show();
 }
            })
            .setNeutralButton("你猜(中立)", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    Toast.makeText(FirstActivity.this, "你猜按钮", Toast.LENGTH_LONG).show();
 }
            })
            .setNegativeButton("勾销(消极)", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    //ToDo: 你想做的事件
 Toast.makeText(FirstActivity.this, "敞开按钮", Toast.LENGTH_LONG).show();
 dialogInterface.dismiss();
 }
            });
 AlertDialog dialog=builder.create();
 //对话框隐没的监听事件
 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
        @Override
 public void onCancel(DialogInterface dialog) {
            Log.e("TAG","对话框隐没了");
 }
    });
 //对话框显示的监听事件
 dialog.setOnShowListener(new DialogInterface.OnShowListener() {
        @Override
 public void onShow(DialogInterface dialog) {
            Log.e("TAG","对话框显示了");
 }
    });
 //显示对话框
 dialog.show();
}

咱们对Dialog 监听dialog 是否显示
dialog.setOnShowListener 和 dialog.setOnCancelListener
// E/TAG: 对话框显示了

四:列表抉择Item Dialog

/**
 * 列表单选抉择 dialog
 */
int checkedItem = 0;
private void showList() {
   //默认选中的item
 final String[] items = {"西湖区", "江干区", "上城区", "下城区", "拱墅区", "滨江区", "萧山区"};
 builder = new AlertDialog.Builder(this)
            .setIcon(R.mipmap.ic_launcher)
            .setTitle("列表抉择dialog")
            .setCancelable(false)
            .setSingleChoiceItems(items,checkedItem, new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                    checkedItem=i;
 Toast.makeText(FirstActivity.this, "你点击的内容为: " + items[i], Toast.LENGTH_LONG).show();
 }
            });
 builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {
        @Override
 public void onClick(DialogInterface dialog, int which) {
        }
    })
            .setNegativeButton("勾销", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialog, int which) {
                }
            });
 builder.create().show();
}

成果:

五:多选列表Dialog

private void showMultiSelect() {
    final List<Integer> choice = new ArrayList<>();
 final String[] items = {"多选1", "多选2", "多选3", "多选4", "多选5", "多选6"};
 //默认都未选中
 boolean[] isSelect = {false, false, false, false, false, false};
 builder = new AlertDialog.Builder(this)
            .setIcon(R.mipmap.ic_launcher)
            .setTitle("多选dialog")
            .setMultiChoiceItems(items, isSelect, new DialogInterface.OnMultiChoiceClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i, boolean b) {
                    if (b) {
                        choice.add(i);
                    } else {
                        choice.remove(choice.indexOf(i));
                    }
                }
            }).setPositiveButton("确定", new DialogInterface.OnClickListener() {
                @Override
 public void onClick(DialogInterface dialogInterface, int i) {
                StringBuilder str = new StringBuilder();
                 for (int j = 0; j < choice.size(); j++) {
                        str.append(items[choice.get(j)]);
                              }
       Toast.makeText(FirstActivity.this, "你抉择了" + str,Toast.LENGTH_LONG).show();
             }
            });
 builder.create().show();
}

成果:

六:显示进度条的Dialog

/**显示进度条的Dialog*/
 private void showLoading() {
 final int MAX_VALUE = 100;
 progressDialog = new ProgressDialog(this);
 progressDialog.setProgress(0);
 progressDialog.setTitle("带有加载进度dialog");
 progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
 progressDialog.setMax(MAX_VALUE);
 progressDialog.show();
 new Thread(new Runnable() {
            @Override
 public void run() {
        int progress = 0;
        while (progress < MAX_VALUE) {
            try {
                  Thread.sleep(100);
                  progress++;
                  progressDialog.setProgress(progress);
            } catch (InterruptedException e) {
                  e.printStackTrace();
             }
                }
                //加载结束主动敞开dialog
 progressDialog.cancel();
 }
 }).start();
 }
 //这种会妨碍用户的交互,当初应用ProgressBar

七:自定义View的Dialog

private void showMyStyle() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
 final AlertDialog dialog = builder.create();
 View dialogView = View.inflate(this, R.layout.dialog_login, null);
 //设置对话框布局
 dialog.setView(dialogView);
 EditText etName = (EditText) dialogView.findViewById(R.id.et_name);
 EditText etPwd = (EditText) dialogView.findViewById(R.id.et_pwd);
 Button btnLogin = (Button) dialogView.findViewById(R.id.btn_login);
 Button btnCancel = (Button) dialogView.findViewById(R.id.btn_cancel);
 btnLogin.setOnClickListener(new View.OnClickListener() {
        @Override
 public void onClick(View v) {
            final String name = etName.getText().toString();
 final String pwd = etPwd.getText().toString();
 if (TextUtils.isEmpty(name) && TextUtils.isEmpty(pwd)) {
                Toast.makeText(FirstActivity.this, "用户名和明码均不能为空", Toast.LENGTH_SHORT).show();
 return; }
            Log.e("TAG", "用户名:" + name);
 Log.e("TAG", "明码:" + pwd);
 dialog.dismiss();
 }
    });
 btnCancel.setOnClickListener(new View.OnClickListener() {
        @Override
 public void onClick(View v) {
            dialog.dismiss();
 }
    });
 dialog.show();
}

对应的布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical">
 <TextView android:id="@+id/textView"
 android:layout_width="match_parent"
 android:layout_height="50dp"
 android:background="#169ee5"
 android:gravity="center"
 android:text="请先登录"
 android:textColor="@android:color/white"
 android:textSize="20sp" />
 <EditText android:id="@+id/et_name"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:hint="请输出你的账户名称"
 android:textSize="18sp" />
 <EditText android:id="@+id/et_pwd"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:hint="请输出你的明码"
 android:textSize="18sp" />
 <LinearLayout android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_marginBottom="5dp"
 android:orientation="horizontal"
 android:paddingLeft="5dp"
 android:paddingRight="5dp">
 <Button
 android:id="@+id/btn_cancel"
 android:layout_width="0dp"
 android:layout_height="wrap_content"
 android:layout_marginRight="10dp"
 android:layout_weight="1"
 android:background="#169ee5"
 android:text="勾销"
 android:textColor="@android:color/white"
 android:textSize="16sp" />
 <Button android:id="@+id/btn_login"
 android:layout_width="0dp"
 android:layout_height="wrap_content"
 android:layout_weight="1"
 android:background="#169ee5"
 android:text="登录"
 android:textColor="@android:color/white"
 android:textSize="16sp" />
 </LinearLayout>
</LinearLayout>

成果:

点击确认后:

 E/TAG: 用户名:admin
 E/TAG: 明码:admin

自定义对话框须要留神的问题:
零碎dialog的宽度默认是固定的,即便你自定义布局怎么批改宽度也不起作用,高度可依据布局主动调节。如果想批改弹出窗体大小,能够应用上面这段代码来实现扭转对话框的宽高。这段代码必dialog.show()办法之后调用才无效。

AlertDialog.Builder builder = new AlertDialog.Builder(this);
final AlertDialog dialog = builder.setCancelable(false).create();
View dialogView = View.inflate(this, R.layout.dialog_login, null);
//设置对话框布局
dialog.setView(dialogView);
dialog.show();
dialog.getWindow().setLayout(ScreenUtils.getScreenWidth(this)/2,LinearLayout.LayoutParams.WRAP_CONTENT);//通过此形式来设置dialog 的宽高

屏幕工具类

public class ScreenUtils {
    /**
 * 获取屏幕高度(px)
 */ public static int getScreenHeight(Context context) {
        return context.getResources().getDisplayMetrics().heightPixels;
 }
    /**
 * 获取屏幕宽度(px)
 */ public static int getScreenWidth(Context context) {
        return context.getResources().getDisplayMetrics().widthPixels;
 }
}

扭转Android Dialog 弹出后的Activity背景亮度:在代码中批改lp.alpha大小,值的大小可依据本人要求设置

// 设置屏幕背景变暗
private void setScreenBgDarken() {
    WindowManager.LayoutParams lp = getWindow().getAttributes();
 lp.alpha = 0.5f;
 lp.dimAmount = 0.5f;
 getWindow().setAttributes(lp);
}
// 设置屏幕背景变亮
private void setScreenBgLight() {
    WindowManager.LayoutParams lp = getWindow().getAttributes();
 lp.alpha = 1.0f;
 lp.dimAmount = 1.0f;
 getWindow().setAttributes(lp);
}

管制弹窗弹出的地位:个别都是在屏幕正中间弹出默认,但能够管制从别的中央弹出,比方从底部弹出

private void popFromBottom(Dialog dialog) {
    Window win = dialog.getWindow();
 win.setGravity(Gravity.BOTTOM); // 这里管制弹出的地位
 win.getDecorView().setPadding(0, 0, 0, 0);
 WindowManager.LayoutParams lp = win.getAttributes();
 lp.width = WindowManager.LayoutParams.MATCH_PARENT;
 lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
 // dialog.getWindow().setBackgroundDrawable(null);//这是设置window背景为空
 win.setAttributes(lp);
}

八:TimePickerDialog应用
同日期选择器一样,工夫选择器也有一般控件和弹框控件两种形式,而且理论开发中也是很少用一般控件(TimePicker),而是罕用封装好的TimePickerDialog,该对话框的用法相似于DatePickerDialog,不同之处有两个:
(1)构造函数传的是以后的小时与分钟,最初一个参数示意是否采纳二十四小时制,个别传true,示意小时数范畴0~23
(2)工夫抉择监听器是OnTimeSetListenser,对应须要实现的办法是onTimeSet,在该办法中能够取得用户选好的小时和分钟

/**工夫抉择Dialog*/
 private void showMyTime() {
        //获取日历的一个实例,外面蕴含了以后的时分秒
 Calendar calendar=Calendar.getInstance();
 //构建一个工夫对话框,该对话框曾经集成了工夫选择器
 //TimePickerDialog的第二个结构参数指定了事件监听器
 TimePickerDialog dialog=new TimePickerDialog(this,this,
 calendar.get(Calendar.HOUR_OF_DAY),
 calendar.get(Calendar.MINUTE),
 true);//true示意应用二十四小时制,第一个是Context,第二个参数监听TimePickerDialog.OnTimeSetListener
 //把工夫对话框显示在界面上
 dialog.show();
 }

实现接口TimePickerDialog.OnTimeSetListener

public class FirstActivity extends AppCompatActivity implements TimePickerDialog.OnTimeSetListener {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
    //获取工夫对话框设定的小时和分钟数
 String desc=String.format("您抉择的工夫是%d时%d分",hourOfDay,minute);
 Toast.makeText(FirstActivity.this, desc, Toast.LENGTH_LONG).show();
}
}

成果:

九:DatePickerDialog 应用

private void showMyDate() {
    //获取日历的一个实例,外面蕴含了以后的年月日
 Calendar calendar=Calendar.getInstance();
 //构建一个日期对话框,该对话框曾经集成了日期选择器
 //DatePickerDialog的第二个结构参数指定了日期监听器
 DatePickerDialog dialog=new DatePickerDialog(this,this,
 calendar.get(Calendar.YEAR),
 calendar.get(Calendar.MONTH),
 calendar.get(Calendar.DAY_OF_MONTH));
 //把日期对话框显示在界面上
 dialog.show();
}

实现接口DatePickerDialog.OnDateSetListener

public class FirstActivity extends AppCompatActivity implements DatePickerDialog.OnDateSetListener {
@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
    //获取日期对话框设定的年月份
 String desc=String.format("您抉择的日期是%d年%d月%d日",year,month+1,dayOfMonth);
 Toast.makeText(FirstActivity.this, desc, Toast.LENGTH_LONG).show();
}
}

成果:

十:齐全自定义Dialog应用
继承Dialog 实现dialog性能

public class LovelyAlertDialog extends Dialog {
    protected LinearLayout dialogRoot;
 protected Context mContext;
 public LovelyAlertDialog(@NonNull Builder builder) {
        super(builder.mContext);
 dialogRoot = (LinearLayout) builder.view;
 mContext = builder.mContext;
 }
    @Override
 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 setContentView(dialogRoot);
 setCanceledOnTouchOutside(true);
 }
 public  static class Builder {
    protected Context mContext;
 private View view;
 private TextView contentTitle;//信息题目
 private TextView contentMsg;//信息内容
 protected TextView btnCancel;//勾销
protected TextView btnConfirm;//确认
DialogInterface.OnClickListener onCancelClickListener;
public Builder(Context context) {
    this.mContext = context;
}
public Builder getView(int resView) {
    view = LayoutInflater.from(mContext).inflate(resView, null);
 return this;}
/**
 * 设置弹窗题目
 */
public final Builder setTitle(int viewRes, String title) {
    contentTitle = view.findViewById(viewRes);
 if (StringUtils.isTrimEmpty(title)) {
        contentTitle.setVisibility(View.GONE);
 } else {
        contentTitle.setVisibility(View.VISIBLE);
 contentTitle.setText(title);
 }
    return this;
}
/**设置确认按钮监听*/
public final Builder setOnConfirmClickListener(int viewRes, String contentConfirmBtn, View.OnClickListener onConfirmClickListener) {
    btnConfirm=view.findViewById(viewRes);
 if (StringUtils.isTrimEmpty(contentConfirmBtn)){
        btnConfirm.setText("确认");
 }else {
        btnConfirm.setText(contentConfirmBtn);
 }
    if (onConfirmClickListener!=null){
        btnConfirm.setOnClickListener(onConfirmClickListener);
 }
    return this;
}
/**设置勾销按钮监听*/
public final Builder setOnCancelClickListener(int viewRes, String contentCancelBtn, OnClickListener onCancelClickListener) {
    btnCancel=view.findViewById(viewRes);
 if (StringUtils.isTrimEmpty(contentCancelBtn)){
        btnCancel.setText("勾销");
 }else {
        btnCancel.setText(contentCancelBtn);
 }
    if (onCancelClickListener!=null){
        this.onCancelClickListener=onCancelClickListener;
 btnCancel.setOnClickListener(v -> {onCancelClickListener.onClick(new LovelyAlertDialog(this),-2);});
 }
    return this;
}
public LovelyAlertDialog create() {
    LovelyAlertDialog dialog = new LovelyAlertDialog(this);
 return dialog;
}

END:学道之难,难于上青天!

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