Android—AlertDialog提示信息

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一、

content_main.xml

<Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="按钮"        android:id="@+id/button1"        android:onClick="DialogClick1"        android:layout_alignParentTop="true"        android:layout_alignParentStart="true"        android:layout_alignParentEnd="true" />

MainActivity.java

public void DialogClick1(View v)    {        //创建一个提示对话框的创造者        AlertDialog.Builder builder=new AlertDialog.Builder(this);        builder.setTitle("提示");        builder.setMessage("您有女朋友吗");        builder.setIcon(R.mipmap.ic_launcher);        //正面按钮        builder.setPositiveButton("有", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this, "你可以走了", Toast.LENGTH_SHORT).show();            }        });        //反面按钮        builder.setNegativeButton("没有", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this, "欢迎加入单身俱乐部", Toast.LENGTH_SHORT).show();            }        });        //中立按钮        builder.setNeutralButton("隐藏", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this,"有没有并不重要",Toast.LENGTH_SHORT).show();            }        });        //AlertDialog dialog= builder.create();        //dialog.show();        builder.show();    }

运行结果：

二、

content_main.xml

<Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="列表"        android:id="@+id/button2"        android:onClick="DialogClick2"        android:layout_below="@+id/button1"        android:layout_alignParentStart="true"        android:layout_alignParentEnd="true" />

MainActivity.java

public void DialogClick2(View v){        AlertDialog.Builder builder=new AlertDialog.Builder(this);        builder.setTitle("请选择一个平台：");        final String[]items={"Android","IOS","Window Phone"};        builder.setItems(items, new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this,items[which],Toast.LENGTH_SHORT).show();            }        });        builder.show();    }

运行结果：

三、

content_main.xml

<Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="多选"        android:id="@+id/button3"        android:onClick="DialogClick3"        android:layout_below="@+id/button2"        android:layout_alignParentStart="true"        android:layout_alignParentEnd="true" />

MainActivity.java

public void DialogClick3(View v){        AlertDialog.Builder builder=new AlertDialog.Builder(this);        builder.setTitle("请选择一个平台：");        final ArrayList<String>List=new ArrayList<String>();        final String[]items={"Android","IOS","Window Phone"};        builder.setMultiChoiceItems(items, null, new DialogInterface.OnMultiChoiceClickListener() {            @Override            public void onClick(DialogInterface dialog, int which, boolean isChecked) {                if(isChecked)                {                    List.add(items[which]);                }                else {                    List.remove(items[which]);                }            }        });        //正面按钮        builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                Toast.makeText(MainActivity.this, List.toString(), Toast.LENGTH_SHORT).show();                dialog.dismiss();            }        });        //反面按钮        builder.setNegativeButton("No", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                List.clear();                dialog.dismiss();            }        });        builder.show();    }

运行结果：

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