Android popupwindow 示例程序一

經過多番測試實踐，實現了popupwindow 彈出在指定控件的下方。代碼上有注釋，有需要注意的地方。popupwindow 有自已的布局，裡面控件的監聽實現都有。接下來看代碼實現。

項目資源下載:點擊這裡

TestPopwindow2.class

package com.example.popwindowdemo;

import android.app.ActionBar.LayoutParams;
import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.PopupWindow;

public class TestPopwindow2 extends PopupWindow {
	// 根視圖
	private View mRootView;
	// LayoutInflater
	LayoutInflater mInflater;

	public TestPopwindow2(Activity context) {
		super(context);
		mInflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		mRootView = mInflater.inflate(R.layout.test_popwindow_2, null);
		setContentView(mRootView);

		this.setWidth(LayoutParams.WRAP_CONTENT);
		this.setHeight(LayoutParams.WRAP_CONTENT);

		// 設置PopUpWindow彈出的相關屬性
		setTouchable(true);
		setOutsideTouchable(true);
		setFocusable(true);
		setBackgroundDrawable(new BitmapDrawable(context.getResources()));
		update();

		getContentView().setFocusableInTouchMode(true);
		getContentView().setFocusable(true);
		setAnimationStyle(R.style.AppBaseTheme);
	}
}

package com.example.popwindowdemo;

import android.os.Bundle;
import android.app.Activity;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.PopupWindow.OnDismissListener;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener,
		OnDismissListener {

	private TestPopwindow2 mTestPopwindow2 = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		InitUI();

	}

	private void InitUI() {
		// 實例化TestPopwindow2
		mTestPopwindow2 = new TestPopwindow2(this);
		// 設置點擊其他位置mTestPopwindow2消失
		mTestPopwindow2.setOnDismissListener(this);

		Button buttonTest2 = (Button) findViewById(R.id.buttonTest2);
		buttonTest2.setOnClickListener(this);
	}

	private void OnPopwindowTest2() {
		if (mTestPopwindow2 == null)
			return;

		// location獲得控件的位置
		int[] location = new int[2];
		View v = findViewById(R.id.buttonTest2);
		if (v != null)
			v.getLocationOnScreen(location);   // 控件在屏幕的位置
		mTestPopwindow2.setAnimationStyle(R.style.AppBaseTheme);
		
		// mTestPopwindow2彈出在某控件(button)的下面
		mTestPopwindow2.showAtLocation(v, Gravity.TOP | Gravity.LEFT,
				location[0] - v.getWidth(), location[1] + v.getHeight());
	}

	// mTestPopwindow2布局控件的監聽
	public void OnclickTestListener(View view) {
		switch (view.getId()) {
		case R.id.layoutSeclect1:
			Toast.makeText(this, "系統熱門方案", Toast.LENGTH_SHORT).show();
			break;
		case R.id.layoutSeclect2:
			Toast.makeText(this, "個人熱門方案", Toast.LENGTH_SHORT).show();
			break;
		default:
			break;
		}
		if (mTestPopwindow2 != null)
			mTestPopwindow2.dismiss();
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.buttonTest2:
			OnPopwindowTest2();
			break;
		default:
			break;
		}
	}

	// 點擊其他地方消失
	@Override
	public void onDismiss() {
	}
}

項目資源下載:點擊這裡

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