【实例简介】
【实例截图】
【核心代码】
package com.yfz;
import com.yfz.view.MyTextView;
import android.app.Activity;
import android.graphics.Rect;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.WindowManager.LayoutParams;
import android.widget.Button;
public class TopFrame extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) findViewById(R.id.bt);
button.setOnClickListener(onclick);
}
private MyTextView tv = null;
OnClickListener onclick = new OnClickListener() {
@Override
public void onClick(View v) {
if(tv != null && tv.isShown()){
WindowManager wm = (WindowManager)getApplicationContext().getSystemService(TopFrame.this.WINDOW_SERVICE);
wm.removeView(tv);
}
show();
}
};
private void show(){
Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
MyTextView.TOOL_BAR_HIGH = frame.top;
WindowManager wm = (WindowManager)getApplicationContext().getSystemService(WINDOW_SERVICE);
WindowManager.LayoutParams params = MyTextView.params;
params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT | WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
params.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL | LayoutParams.FLAG_NOT_FOCUSABLE;
params.width = WindowManager.LayoutParams.FILL_PARENT;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.alpha = 80;
params.gravity=Gravity.LEFT|Gravity.TOP;
//以屏幕左上角为原点，设置x、y初始值
params.x = 0;
params.y = 0;
tv = new MyTextView(TopFrame.this);
wm.addView(tv, params);
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
WindowManager wm = (WindowManager)getApplicationContext().getSystemService(WINDOW_SERVICE);
//if(tv != null && tv.isShown()){
//wm.removeView(tv);
//}
super.onDestroy();
}
}
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