练习使用Dialog实习对话框
package com.example.tsh; import android.app.Activity; import android.app.Dialog; import android.os.Bundle; import android.os.Handler; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.PopupWindow; public class MainActivity extends Activity { private Handler handler=new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Dialog实现对话框 Dialog dialog=new Dialog(this,R.style.Theme_Tsh_Dialog); dialog.setContentView(R.layout.activity_two); dialog.show(); } }
styles.xml
<?xml version="1.0" encoding="utf-8"?> <resources xmlns:android="http://schemas.android.com/apk/res/android"> <!-- 自定义对话框主题 --> <style name="Theme.Tsh.Dialog" parent="@android:style/Theme.Dialog"> <item name="android:windowBackground">@null</item> </style> </resources>
练习使用PopupWindow实现对话框
package com.example.tsh; import android.app.Activity; import android.app.Dialog; import android.os.Bundle; import android.os.Handler; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.PopupWindow; public class MainActivity extends Activity { private Handler handler=new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //Dialog实现对话框 // Dialog dialog=new Dialog(this,R.style.Theme_Tsh_Dialog); // dialog.setContentView(R.layout.activity_two); // dialog.show(); //使用PopupWindow实现对话框 Button dropDown=(Button) findViewById(R.id.bt_dropdown); dropDown.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { View anchor=View.inflate(MainActivity.this, R.layout.activity_two, null); final PopupWindow popupWindow=new PopupWindow(anchor, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,true); //点击空白隐藏 popupWindow.setTouchable(true); popupWindow.setTouchInterceptor(new OnTouchListener() { @Override public boolean onTouch(View arg0, MotionEvent arg1) { popupWindow.dismiss(); return false; } }); popupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.ic_launcher)); popupWindow.showAsDropDown(arg0); } }); } }
activity_main.xml
<?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:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="第一个界面"/> <Button android:id="@+id/bt_dropdown" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="显示下拉" /> </LinearLayout>