UI控件--AlertDialog

最简单的Alertdialog

AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("请注意！！！");
builder.setIcon(R.mipmap.ic_launcher);
builder.setMessage("你确定要删除吗？");
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "OK", Toast.LENGTH_SHORT).show();
}
});

builder.setNegativeButton("cancal", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "cancal", Toast.LENGTH_SHORT).show();
}
});
builder.show();

带单选框的AlertDialog

注意无论是带单选框还是带多选框的弹窗，都不可设置setMessage方法，若调用此方法，会导致message内容覆盖选项

final String[] strings={"女","男"};
AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("请注意！！！");
builder.setIcon(R.mipmap.ic_launcher);
builder.setSingleChoiceItems(strings, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, strings[which], Toast.LENGTH_SHORT).show();
}
});
builder.show();

带多选框的Alertdialog

final String[] strings={"斗地主","LOL","打麻将","下象棋"};
final boolean[] isOn=new boolean[strings.length];
AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("请注意！！！");
builder.setIcon(R.mipmap.ic_launcher);
builder.setMultiChoiceItems(strings, isOn, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
isOn[which]=isChecked;
}
});

builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String str="";
for (int i=0;i<strings.length;i++){
if (isOn[i]){
str+=strings[i];
}
}
Toast.makeText(MainActivity.this, str, Toast.LENGTH_SHORT).show();
}
});

builder.show();

自定义Dialog

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

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView1111" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="New Text"
android:id="@+id/textView2222" />
</LinearLayout>

Dialog dialog1=new Dialog(this);
View view1=LayoutInflater.from(this).inflate(R.layout.my_layout,null);
TextView textView= (TextView) view1.findViewById(R.id.textView1111);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "我是第一个TextView", Toast.LENGTH_SHORT).show();
}
});
TextView textView1= (TextView) view1.findViewById(R.id.textView2222);
textView1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "我是第2个TextView", Toast.LENGTH_SHORT).show();
}
});
dialog1.setTitle("自定义的弹窗");
dialog1.setContentView(view1);
dialog1.show();