效果图:
activity_main:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:padding="8dp" tools:context=".MainActivity"> <Button android:id="@+id/btn" android:text="打开底部对话框" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>
botton_dialog:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#fff" android:paddingBottom="20dp" android:orientation="vertical"> <Button android:id="@+id/btn_open_camera" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:text="1" android:textSize="18sp" /> <Button android:id="@+id/btn_choose_img" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:text="2" android:textSize="18sp" /> <Button android:id="@+id/btn_cancel" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:text="3" android:textSize="18sp" /> </LinearLayout>
因为时弹出,涉及到动画,所以我们在res下自定义一个文件夹anim
@anim/dialog_in:
<?xml version="1.0" encoding="utf-8"?> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="200" android:fromYDelta="100%" android:toYDelta="0" />
@anim/dialog_iout:
<?xml version="1.0" encoding="utf-8"?> <translate xmlns:android="http://schemas.android.com/apk/res/android" android:duration="200" android:fromYDelta="0" android:toYDelta="100%" />
styles中定义样式:
<style name="BottomDialog" parent="@android:style/Theme.Dialog"> <!-- 背景透明 --> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowContentOverlay">@null</item> <!-- 浮于Activity之上 --> <item name="android:windowIsFloating">true</item> <!-- 边框 --> <item name="android:windowFrame">@null</item> <!-- Dialog以外的区域模糊效果 --> <item name="android:backgroundDimEnabled">true</item> <!-- 无标题 --> <item name="android:windowNoTitle">true</item> <!-- 半透明 --> <item name="android:windowIsTranslucent">true</item> <!-- Dialog进入及退出动画 --> <item name="android:windowAnimationStyle">@style/DialogAnimation</item> </style> <!-- ActionSheet进出动画 --> <style name="DialogAnimation" parent="@android:style/Animation.Dialog"> <item name="android:windowEnterAnimation">@anim/dialog_in</item> <item name="android:windowExitAnimation">@anim/dialog_iout</item> </style>
MainActivity:
import android.app.Dialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.LinearLayout; import android.widget.Toast; public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button btn_botton_dialog; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btn_botton_dialog = (Button) findViewById(R.id.btn); btn_botton_dialog.setOnClickListener(this); } @Override public void onClick(View view) { switch (view.getId()){ case R.id.btn: setDialog(); break; case R.id.btn_choose_img: Toast.makeText(this, "1", Toast.LENGTH_SHORT).show(); break; case R.id.btn_open_camera: Toast.makeText(this, "2", Toast.LENGTH_SHORT).show(); break; case R.id.btn_cancel: Toast.makeText(this, "3", Toast.LENGTH_SHORT).show(); break; } } private void setDialog(){ Dialog mCameraDialog = new Dialog(this, R.style.BottomDialog); LinearLayout root = (LinearLayout) LayoutInflater.from(this).inflate( R.layout.botton_dialog, null); //初始化视图 root.findViewById(R.id.btn_choose_img).setOnClickListener(this); root.findViewById(R.id.btn_open_camera).setOnClickListener(this); root.findViewById(R.id.btn_cancel).setOnClickListener(this); mCameraDialog.setContentView(root); Window dialogWindow = mCameraDialog.getWindow(); dialogWindow.setGravity(Gravity.BOTTOM); // dialogWindow.setWindowAnimations(R.style.dialogstyle); // 添加动画 WindowManager.LayoutParams lp = dialogWindow.getAttributes(); // 获取对话框当前的参数值 lp.x = 0; // 新位置X坐标 lp.y = 0; // 新位置Y坐标 lp.width = (int) getResources().getDisplayMetrics().widthPixels; // 宽度 root.measure(0, 0); lp.height = root.getMeasuredHeight(); lp.alpha = 9f; // 透明度 dialogWindow.setAttributes(lp); mCameraDialog.show(); } }
源码:https://github.com/luyaopeng/AndroidLearning.git