Android对话框

常用对话框

普通对话框

public void btn(View view) {
        //创建一个对话框创建者
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("标题");//设置标题属性
        builder.setMessage("内容");// 设置内容属性  不能和单选多选连用
        //确定按钮
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
            }
        });
        //取消按钮
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();
            }
        });
        //构造者模式
        AlertDialog alertDialog = builder.create();
        //展示对话框  如不展示没有效果
        alertDialog.show();
    }

单选对话框

public void btn1(View view) {
        //创建一个对话框创建者
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("标题");//设置标题属性
        final String[] s=new String[]{"篮球","足球","学习"};//定义的数组必须为全局变量
        //设置单选的点击事件
        builder.setSingleChoiceItems(s, 0, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, s[which], Toast.LENGTH_SHORT).show();
            }
        });
        //确定按钮
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
            }
        });
        //取消按钮
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();
            }
        });
        AlertDialog alertDialog = builder.create();
        alertDialog.show();//展示弹窗
    }

多选对话框

public void btn2(View view) {
        //创建一个对话框创建者
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("标题");
        final String[] s=new String[]{"篮球","足球","学习"};//创建字符串数组
        final boolean[] b=new boolean[]{false,false,false};//创建boolean数组
        //设置多选的点击事件
        builder.setMultiChoiceItems(s, b, new DialogInterface.OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                if (isChecked){
                    Toast.makeText(MainActivity.this, s[which], Toast.LENGTH_SHORT).show();
                }
            }
        });
        //确定按钮
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
                for (int i = 0; i < b.length; i++) {
                    if (b[i]){
                        Toast.makeText(MainActivity.this, s[i], Toast.LENGTH_SHORT).show();
                    }
                }
            }
        });
        //取消按钮
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();
            }
        });
        //创建构造者
        AlertDialog alertDialog = builder.create();
        alertDialog.show();
    }

进度条对话框

public void btn4(View view) {
        //创建一个进度条的构造者
        final ProgressDialog progressDialog=new ProgressDialog(this);
        progressDialog.setTitle("标题");//设置标题
        progressDialog.setMax(100);//设置最大长度
        progressDialog.setProgress(10);//设置当前长度
        progressDialog.setSecondaryProgress(20);//设置第二长度
        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);//设置样式
        progressDialog.show();//展示对话框
        final Timer timer=new Timer();//定时器
        timer.schedule(new TimerTask() {
            int index=0;//定义一个属性
            @Override
            public void run() {
                index+=10;
                progressDialog.show();
                progressDialog.setProgress(index);
                if (index>100){
                    timer.cancel();//关闭计时器
                    progressDialog.dismiss();//关闭进度条对话框
                }
            }
        },0,1000);//前一个属性为开始时停顿时间，后一个为每运行一次停顿时间

        progressDialog.show();//展示对话框
    }

自定义对话框

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent">
    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:text="机器人"
        android:layout_height="wrap_content"/>
    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:src="@mipmap/ic_launcher"
        android:layout_height="wrap_content"/>
</LinearLayout>

public void btn3(View view) {
        //创建一个对话框创建者
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("标题");
        //将布局文件转换为view属性
        View inflate = LayoutInflater.from(this).inflate(R.layout.item, null);
        builder.setView(inflate);//设置自定义布局样式
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();
            }
        });
        //创建全局变量的构造者模式
        final AlertDialog alertDialog = builder.create();
        //查找布局中图片id
        ImageView imageView = inflate.findViewById(R.id.iv);
        //给图片设置点击事件
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                alertDialog.dismiss();
            }
        });
        //展示对话框
        alertDialog.show();
    }

完全自定义对话框

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:layout_width="300dp"
        android:orientation="vertical"
        android:layout_centerInParent="true"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/ti"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="警告"
            android:textSize="20sp" />
        <TextView
            android:id="@+id/msg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="少玩游戏，保护眼睛"
            android:layout_marginTop="10dp"
            android:textSize="20sp"/>
        <LinearLayout
            android:layout_width="300dp"
            android:layout_height="wrap_content"
            android:layout_marginTop="20dp"
            android:orientation="horizontal">
            <Button
                android:id="@+id/no"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="取消"
                android:background="@color/white"
                android:textSize="30sp"/>
            <Button
                android:id="@+id/yes"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="确定"
                android:background="@color/white"
                android:textSize="30sp"/>
        </LinearLayout>
    </LinearLayout>

</RelativeLayout>

public class MyTask extends Dialog {//继承对话框
    //封装布局中的属性
    private TextView ti;
    private TextView msg;
    private Button no;
    private Button yes;



    public MyTask(@NonNull Context context) {//重写对话框类中的方法
        super(context);
    }
    //定义一个String类型
    private String strti;
    //设置set方法
    public void setStrti(String strti) {
        this.strti = strti;
    }
    //定义一个String类型
    private String strMsg;
    //设置set方法
    public void setStrMsg(String strMsg) {
        this.strMsg = strMsg;
    }
    //声明接口
    public interface YesOnClick{
        void click();
    }
    //声明接口变量
    private YesOnClick yesOnClick;
    //给接口变量赋值
    public void setYesOnClick(YesOnClick yesOnClick) {
        this.yesOnClick = yesOnClick;
    }
    //声明接口
    public interface NoOnClick{
        void click();
    }
    //声明接口变量
    private NoOnClick noOnClick;
    //给接口变量赋值
    public void setNoOnClick(NoOnClick noOnClick) {
        this.noOnClick = noOnClick;
    }
    //调用onCreate方法
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.item2);//找到布局xml文件
        initView();
        ti.setText(strti);//给Textview赋值
        msg.setText(strMsg);//给Textview赋值
        //设置点击事件
        yes.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
                yesOnClick.click();
            }
        });
        //设置点击事件
        no.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
                noOnClick.click();
            }
        });
    }

    private void initView() {
        ti = (TextView) findViewById(R.id.ti);
        msg = (TextView) findViewById(R.id.msg);
        no = (Button) findViewById(R.id.no);
        yes = (Button) findViewById(R.id.yes);
    }
}

日期对话框

public void btn5(View view) {
        //获取当前时间
        Calendar calendar=Calendar.getInstance();
        //创建一个时间对话框的构造者
        DatePickerDialog datePickerDialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
                Toast.makeText(MainActivity.this, year + "年" + month + "月" + dayOfMonth + "日", Toast.LENGTH_SHORT).show();
            }
        }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
        //展示对话框
        datePickerDialog.show();
    }

时间对话框

public void btn6(View view) {
        //获取当前时间
        Calendar calendar=Calendar.getInstance();
        //创建一个时间对话框的构造者
        TimePickerDialog timePickerDialog = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                Toast.makeText(MainActivity.this, hourOfDay+":"+minute, Toast.LENGTH_SHORT).show();
            }
        }, calendar.get(Calendar.HOUR), calendar.get(Calendar.MINUTE), true);
        //展示对话框
        timePickerDialog.show();
}