下面介绍两种弹出方式,一种是利用TranslateAnimation动画,另一种是PopupWindow
左边是动画,右边是popupwindow。
第一种方式:public class MainActivity extends AppCompatActivity {
private LinearLayout mPopupLayout;
private Button btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mPopupLayout = (LinearLayout) findViewById(R.id.start_ctrl);
btn = findViewById(R.id.start_btn);
startAnim();
}
private void startAnim() {
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//设置动画,从自身位置的最下端向上滑动了自身的高度,持续时间为500ms
final TranslateAnimation ctrlAnimation = new TranslateAnimation(
TranslateAnimation.RELATIVE_TO_SELF, 0, TranslateAnimation.RELATIVE_TO_SELF, 0,
TranslateAnimation.RELATIVE_TO_SELF, 1, TranslateAnimation.RELATIVE_TO_SELF, 0);
ctrlAnimation.setDuration(400l); //设置动画的过渡时间
mPopupLayout.postDelayed(new Runnable() {
@Override
public void run() {
mPopupLayout.setVisibility(View.VISIBLE);
mPopupLayout.startAnimation(ctrlAnimation);
}
}, 500);
}
});
}
}
第二种方式:
先创建一个popupwindow:
private PopupWindow mPopupWindow;
mPopupWindow = createPopupWindow(contentView);
将需要的布局文件传入即可:
private PopupWindow createPopupWindow(View contentView) {
contentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
PopupWindow popupWindow = new PopupWindow(contentView, WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT, true);
popupWindow.setTouchable(true);
popupWindow.setBackgroundDrawable(new BitmapDrawable());
popupWindow.setFocusable(true);
popupWindow.setAnimationStyle(R.style.PopupAnimation);
popupWindow.setClippingEnabled(true);
popupWindow.setSoftInputMode(PopupWindow.INPUT_METHOD_NEEDED);
popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
popupWindow.showAtLocation(mRootLayout, Gravity.NO_GRAVITY, 0, DimenUtils.getWindowHeight() - contentView.getMeasuredHeight());
popupWindow.update();
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
@Override
public void onDismiss() {
setWindowBackgroundAlpha(1.0f);//当PopupWindow消失的时候Window完全透明
}
});
return popupWindow;
}
第三种方式:
转载自:https://www.jianshu.com/p/e1d2cc82e756
private void show1() {
Dialog bottomDialog = new Dialog(this, R.style.BottomDialog);
View contentView = LayoutInflater.from(this).inflate(R.layout.dialog_content_normal, null);
bottomDialog.setContentView(contentView);
ViewGroup.LayoutParams layoutParams = contentView.getLayoutParams();
layoutParams.width = getResources().getDisplayMetrics().widthPixels;
contentView.setLayoutParams(layoutParams);
bottomDialog.getWindow().setGravity(Gravity.BOTTOM);
bottomDialog.getWindow().setWindowAnimations(R.style.BottomDialog_Animation);
bottomDialog.show();
}
对话框的样式style:
true
@android:color/transparent
在对话框中的按钮需要MD风格的波纹效果的话,对话框的style
的parent
需要设定parent="@style/Base.V7.Theme.AppCompat.Light.Dialog"
,否则没有效果。同时将对话框所在window
的标题去掉。android:windowBackground
属性一定要设置成透明,否则自定义形状的对话框背景就是默认的白色了。如果不设置为透明,比如我们通常要设置的圆角对话框就没有效果
对话框显示时从底部进入,关闭时从底部滑出。动画样式:
@anim/translate_dialog_in
@anim/translate_dialog_out
tranlate_dialog_in.xml
:
tranlate_dialog_out.xml
:
实现底部对话框的原理就是修改对话框的内容布局contentView
的参数,使它的宽度刚好等于屏幕的宽度,并且设置对话框所在Window
的gravity
属性为bottom
。
需要注意的是,上面代码中需要在调用contentView.getLayoutParams()
需要在setContentView
方法后,否则获取到的LayoutParams
为null
,当然也可以自己new
一个LayoutParams
设置给contentView
。
如果是要实现底部圆角对话框,原理也相似,只需要给contentView
添加一个圆角的背景shape
,并减小contentView
的宽度给左右两边留一定的距离,同时给底部设置边距。
private void show2() {
Dialog bottomDialog = new Dialog(this, R.style.BottomDialog);
View contentView = LayoutInflater.from(this).inflate(R.layout.dialog_content_circle, null);
bottomDialog.setContentView(contentView);
ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) contentView.getLayoutParams();
params.width = getResources().getDisplayMetrics().widthPixels - DensityUtil.dp2px(this, 16f);
params.bottomMargin = DensityUtil.dp2px(this, 8f);
contentView.setLayoutParams(params);
bottomDialog.getWindow().setGravity(Gravity.BOTTOM);
bottomDialog.getWindow().setWindowAnimations(R.style.BottomDialog_Animation);
bottomDialog.show();
}
第三种方式的git代码:https://github.com/buder-cp/base_component_learn/blob/master/BottomDialog-master.zip