课程Demo
重点解析自定义对话框
public class MainActivity extends AppCompatActivity {
private Button bt1;
private Button bt2;
private Button bt3;
private Button bt4;
private Button bt5;
private Button testbt;
private EditText edit;
private TextView text1;
private String singleitem[]={"男","女","人妖"};
private String moreitem[]={"杨幂","刘诗诗","宋茜","古力娜扎"};
private String listitem[]={"杨幂","刘诗诗","宋茜","古力娜扎"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt1= (Button) findViewById(R.id.bt1);
bt2= (Button) findViewById(R.id.bt2);
bt3= (Button) findViewById(R.id.bt3);
bt4= (Button) findViewById(R.id.bt4);
bt5= (Button) findViewById(R.id.bt5);
showDialog1();
showDialog2();
showDialog3();
showDialog4();
showDialog5();
}
//普通对话框的实现
private void showDialog1() {
bt1.setOnClickListener(new View.OnClickListener() {
AlertDialog.Builder build=new AlertDialog.Builder(MainActivity.this);
@Override
public void onClick(View v) {
build.setTitle("确认对话框");
build.setIcon(R.drawable.she);
build.setMessage("是否确定你的选择");
build.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"点击了确定按钮",Toast.LENGTH_SHORT).show();
}
});
build.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"点击了取消按钮",Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});
AlertDialog dialog=build.create();
dialog.show();
}
});
}
//单选对话框的实现
private void showDialog2() {
bt2.setOnClickListener(new View.OnClickListener() {
AlertDialog.Builder build=new AlertDialog.Builder(MainActivity.this);
@Override
public void onClick(View v) {
build.setIcon(R.drawable.she);
build.setTitle("你的性别是：");
//singleitem:存放数据的数据名 0：默认选择第一个
build.setSingleChoiceItems(singleitem, 0, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"你的性别为"+singleitem[which],Toast.LENGTH_SHORT).show();
}
});
AlertDialog dialog=build.create();
dialog.show();
}
});
}
//多选对话框的实现
private void showDialog3() {
bt3.setOnClickListener(new View.OnClickListener() {
AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
@Override
public void onClick(View v) {
build.setTitle("多选对话框");
build.setIcon(R.drawable.she);
build.setTitle("你喜欢的人是:");
build.setMultiChoiceItems(moreitem, null, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
if (isChecked) {
Toast.makeText(MainActivity.this, "你喜欢:" + moreitem[which], Toast.LENGTH_SHORT).show();
}
else{
Toast.makeText(MainActivity.this, "你不喜欢:" + moreitem[which], Toast.LENGTH_SHORT).show();
}
}
});
AlertDialog dialog = build.create();
dialog.show();
}
});
}
//列表对话框的实现
private void showDialog4() {
bt4.setOnClickListener(new View.OnClickListener() {
AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
@Override
public void onClick(View v) {
build.setIcon(R.drawable.she);
build.setTitle("你喜欢的人是:");
build.setItems(listitem, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this, "我更喜欢:" +listitem[which], Toast.LENGTH_SHORT).show();
}
});
AlertDialog dialog = build.create();
dialog.show();
}
});
}
//自定义对话框的实现
private void showDialog5() {
bt5.setOnClickListener(new View.OnClickListener() {
AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
@Override
public void onClick(View v) {
//设置对话框标题
build.settitle("测试你们的缘分");
//设置对话框图标
build.setIcon(R.drawable.she);
//创建视图
LayoutInflater inflate=LayoutInflater.from(MainActivity.this);
final View view=inflate.inflate(R.layout.view,null);
// 加载视图
build.setView(view);
testbt= (Button) view.findViewById(R.id.testbt);
//创建对话框
AlertDialog dialog = build.create();
testbt.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
//想获取对话框中的EditText的值，必须在初始化的时候加所在View对象view 的findViewById方法
edit=(EditText) view.findViewById(R.id.edit);
text1=(TextView)view.findViewById(R.id.text1);
text1.setText("你与"+edit.getText()+"有三生三世十里桃花的缘分");
}
});
build.setPositiveButton("退出", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(MainActivity.this,"退出对话框",Toast.LENGTH_SHORT).show();
//退出对话框
dialog.dismiss();
}
});
//展示对话框
dialog.show();
}
});
}
}
附view.xml配置文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="请输入你喜欢的人"/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/edit"/>
<Button
android:text="测试缘分"
android:id="@+id/testbt"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<ImageView
android:layout_width="200dp"
android:layout_height="200dp"
android:src="@drawable/she"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/text1"
android:hint="即将揭晓你和她的缘分"/>
</LinearLayout>