Android PopupWindow

骑猪看日落 2023-10-18 09:13 65阅读 0赞

代码：

package zhangphil.test;
    
    import android.content.Context;
    import android.content.res.Resources;
    import android.graphics.Color;
    import android.os.Bundle;
    import android.support.annotation.Nullable;
    import android.support.v7.app.AppCompatActivity;
    import android.util.DisplayMetrics;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.widget.Button;
    import android.widget.PopupWindow;
    import android.widget.TextView;
    
    public class TestActivity extends AppCompatActivity {
    
        @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.test_activity);
            Button mButton = findViewById(R.id.button);
            mButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    show(mButton, 0, 0);
                }
            });
        }
    
        private void show(View view, int xOff, int yOff) {
            View contentView = LayoutInflater.from(getApplicationContext()).inflate(android.R.layout.simple_list_item_2, null, false);
            contentView.setBackgroundColor(Color.LTGRAY);
    
            TextView text1 = contentView.findViewById(android.R.id.text1);
            text1.setText("zhang");
    
            TextView text2 = contentView.findViewById(android.R.id.text2);
            text2.setText("phil");
    
            float[] size = getDeviceDisplaySize(getApplicationContext());
            PopupWindow window = new PopupWindow(contentView, (int) size[0], 300, true);
            //window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    
            window.setOutsideTouchable(true);
            window.setTouchable(true);
    
            window.showAsDropDown(view, xOff, yOff);
        }
    
        public static float[] getDeviceDisplaySize(Context context) {
            Resources resources = context.getResources();
            DisplayMetrics dm = resources.getDisplayMetrics();
            int width = dm.widthPixels;
            int height = dm.heightPixels;
    
            float[] size = new float[2];
            size[0] = width;
            size[1] = height;
    
            return size;
        }
    }

运行如图：

![70][]

[70]: https://img-blog.csdn.net/20180926104651761?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3poYW5ncGhpbA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70