底部弹出对话框

private void showDialog() {

//自定义的xml布局文件

View view = getLayoutInflater().inflate(R.layout.photo_choose_dialog, null);

//设置Dialog的透明主题

Dialog dialog = new Dialog(this, R.style.transparentFrameWindowStyle);
dialog.setContentView(view, new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
Window window = dialog.getWindow();
// 设置显示动画
window.setWindowAnimations(R.style.main_menu_animstyle);
WindowManager.LayoutParams wl = window.getAttributes();
wl.x = 0;
wl.y = getWindowManager().getDefaultDisplay().getHeight();
// 以下这两句是为了保证按钮可以水平满屏
wl.width = ViewGroup.LayoutParams.MATCH_PARENT;
wl.height = ViewGroup.LayoutParams.WRAP_CONTENT;


// 设置显示位置
dialog.onWindowAttributesChanged(wl);
// 设置点击外围解散
dialog.setCanceledOnTouchOutside(true);
dialog.show();

}

<style name="main_menu_animstyle">
        <item name="android:windowEnterAnimation">@anim/photo_dialog_in_anim</item>
        <item name="android:windowExitAnimation">@anim/photo_dialog_out_anim</item>
    </style>

photo_dialog_in_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <translate
        android:duration="500"
        android:fromXDelta="0"
        android:fromYDelta="1000"
        android:toXDelta="0"
        android:toYDelta="0" />
</set>

photo_dialog_out_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
    <translate
        android:duration="500"
        android:fromXDelta="0"
        android:fromYDelta="0"
        android:toXDelta="0"
        android:toYDelta="1000" />
</set>