android AlertDialog对话框用法

1.简介

我们在平时的开发过程中很多情况下都会用到对话框AlertDialog，这里就对AlertDialog一些常用的情况做个介绍

2.用法

创建确认对话框

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("确认对话框");//设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标
builder.setMessage("确认对话框提示内容");//设置内容
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

Toast.makeText(this, "点击了确认按钮" , Toast.LENGTH_LONG).show();
}
});

builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

Toast.makeText(this, "点击了取消按钮", Toast.LENGTH_LONG).show();
}
});

//用creat()方法创建dialog, show()方法展示出来
AlertDialog dialog = builder.create();
dialog.show();

单选对话框

final String[] list = {"男", "女", "程序员"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("选择性别");//设置标题
builder.setIcon(R.mipmap.ic_launcher);//设置图标
//单选
builder.setSingleChoiceItems(list, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

Toast.makeText(this,"选择了" + list[which], Toast.LENGTH_LONG ).show();
dialog.dismiss();
}
});

AlertDialog dialog = builder.create();
dialog.show();

多选对话框

final  String[] list = {"足球","篮球","排球","网球"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("爱好");
builder.setIcon(R.mipmap.ic_launcher);//设置图标
builder.setMultiChoiceItems(list, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked){
Toast.makeText(this, "选择了" + list[which], Toast.LENGTH_LONG).show();
}else {
Toast.makeText(this, "取消了" + list[which], Toast.LENGTH_LONG).show();
}
}
});

builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});

AlertDialog dialog = builder.create();
dialog.show();

列表对话框

final  String[] list = {"足球","篮球","排球","网球"};
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("爱好");
builder.setIcon(R.mipmap.ic_launcher);//设置图标
builder.setItems(list, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

Toast.makeText(this, "选择了" + list[which], Toast.LENGTH_LONG).show();
}
});

builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});

AlertDialog dialog = builder.create();
dialog.show();

自定义对话框

//LayoutInflater将自定义的布局文件加载进来
View view1 = LayoutInflater.from(this).inflate(R.layout.dialog_view, null);

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("自定义对话框");
builder.setIcon(R.mipmap.ic_launcher);//设置图标
//设置自定义view
builder.setView(view1);
AlertDialog dialog = builder.create();
dialog.show();

3.总结

以上介绍是一些基本的对话框用法，但也包含了大多需求，如果有什么不能满足的，我们用自定义对话框就可以了。