金正日强吻普京,u一族,多方通话
首先我们上图：
xml的代码如下，用于编写按钮：
我要评论<?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:background="@drawable/background"
xmlns:widget="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
<button
android:id="@+id/button_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="简单的dialog"
/>
<button
android:id="@+id/button_2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="列表的dialog"
/>
<button
android:id="@+id/button_3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="单选的dialog"
/>
<button
android:id="@+id/button_4"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="多选的dialog"
/>
</linearlayout>
java代码如下，用于实现逻辑：
import androidx.appcompat.app.actionbar;
import androidx.appcompat.app.alertdialog;
import androidx.appcompat.app.appcompatactivity;
import android.content.dialoginterface;
import android.os.bundle;
import android.view.view;
import android.widget.button;
import android.widget.toast;
public class mainactivity extends appcompatactivity{
int index;
string [] item = {"android","ios","spark","hadoop","web"};
boolean[] bools = {false,false,false,false,false};
// 设置boolean数组所有的选项设置默认没选
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
actionbar actionbar = getsupportactionbar();
if (actionbar != null) {
actionbar.hide();
}
button button=(button)findviewbyid(r.id.button_1);
button.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
alertdialog.builder builder = new alertdialog.builder(mainactivity.this);
builder.seticon(r.drawable.girl);
builder.settitle("标题栏");
builder.setmessage("对话框内容，可自行设置");
builder.setpositivebutton("确定",new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialog, int which) {
toast.maketext(mainactivity.this, "点击了确定", toast.length_short).show();
}
});
builder.setnegativebutton("取消", new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialoginterface, int i) {
toast.maketext(mainactivity.this, "点击了取消", toast.length_short).show();
}
});
builder.setneutralbutton("好的", new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialoginterface, int i) {
toast.maketext(mainactivity.this, "点击了“好的”", toast.length_short).show();
}
});
alertdialog alertdialog = builder.create();
alertdialog.show();
}
});
button button2=(button)findviewbyid(r.id.button_2);
button2.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
alertdialog.builder builder = new alertdialog.builder(mainactivity.this);
builder.settitle("请选择一个技术分支");
builder.setitems(item, new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialog, int which) {
toast.maketext(mainactivity.this, "选择了"+item[which], toast.length_short).show();
}
});
// 取消可以不添加
//builder.setnegativebutton("取消",null);
alertdialog alertdialog = builder.create();
alertdialog.show();
}
});
button button3=(button)findviewbyid(r.id.button_3);
button3.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
alertdialog.builder builder = new alertdialog.builder(mainactivity.this);
builder.settitle("请选择技术分支：");
builder.setsinglechoiceitems(item, index, new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialog, int which) {
index = which;
}
});
builder.setpositivebutton("确定", new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialog, int which) {
toast.maketext(mainactivity.this, "选择了"+item[index], toast.length_short).show();
}
});
builder.setnegativebutton("取消",null);
alertdialog alertdialog = builder.create();
alertdialog.show();
}
});
button button4=(button)findviewbyid(r.id.button_4);
button4.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view view) {
alertdialog.builder builder = new alertdialog.builder(mainactivity.this);
builder.settitle("请选择技术分支：");
builder.setmultichoiceitems(item, bools, new dialoginterface.onmultichoiceclicklistener() {
@override
public void onclick(dialoginterface dialog, int which, boolean ischecked) {
bools[which] = ischecked;
}
});
builder.setpositivebutton("确定", new dialoginterface.onclicklistener() {
@override
public void onclick(dialoginterface dialog, int which) {
stringbuffer sb = new stringbuffer();
for (int i = 0; i < item.length; i++) {
if (bools[i]) {
sb.append(item[i] + " ");
}
}
toast.maketext(mainactivity.this, "选择了" + sb.tostring(), toast.length_short).show();
}
});
builder.setnegativebutton("取消",null);
alertdialog alertdialog = builder.create();
alertdialog.show();
}
});
}
}
得解也
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