原文网址：/u010694658/article/details/53022294
由于开发中经常使用弹框，然而系统自带的弹框太局限，也不太美观，经常不能满足开发需求，所以就只能自定义布局。其实自定义布局很简单，没不要写出来，但是如果不写一遍的，后面遇到的话就感觉又会忘记，所以在次记一小笔，仅记一个最简单的例子，可以举一反三。
直接上代码
public class MainActivity extends Activity implements OnClickListener { private TextView text1, text2; private Context mContext; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); mContext = this; initView(); } private void initView() { text1 = (TextView) findViewById(R.id.text1); text2 = (TextView) findViewById(R.id.text2); text1.setOnClickListener(this); text2.setOnClickListener(this); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.text1: dialogShow1(); break; case R.id.text2: dialogShow2(); break; default: break; } } private void dialogShow1() { AlertDialog.Builder builder = new Builder(mContext); builder.setTitle("温馨提示"); builder.setIcon(R.drawable.ic_launcher); builder.setMessage("原理是基本"); builder.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1) { Toast.makeText(mContext, "no", 1).show(); } }); builder.setPositiveButton("立即更新", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1) { Toast.makeText(mContext, "ok", 1).show(); } }); Dialog dialog = builder.create(); dialog.show(); } /** * 自定义布局 * setView()只会覆盖AlertDialog的Title与Button之间的那部分，而setContentView()则会覆盖全部， * setContentView()必须放在show()的后面 */ private void dialogShow2() { AlertDialog.Builder builder = new Builder(mContext); LayoutInflater inflater = LayoutInflater.from(mContext); View v = inflater.inflate(R.layout.update_manage_dialog, null); TextView content = (TextView) v.findViewById(R.id.dialog_content); Button btn_sure = (Button) v.findViewById(R.id.dialog_btn_sure); Button btn_cancel = (Button) v.findViewById(R.id.dialog_btn_cancel); //builer.setView(v);//这里如果使用builer.setView(v)，自定义布局只会覆盖title和button之间的那部分 final Dialog dialog = builder.create(); dialog.show(); dialog.getWindow().setContentView(v);//自定义布局应该在这里添加，要在dialog.show()的后面 //dialog.getWindow().setGravity(Gravity.CENTER);//可以设置显示的位置 btn_sure.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); Toast.makeText(mContext, "ok", 1).show(); } }); btn_cancel.setOnClickListener(new OnClickListener() { @Override public void onClick(View arg0) { dialog.dismiss(); Toast.makeText(mContext, "no", 1).show(); } }); } }
activity_main的布局
<LinearLayout xmlns:android="/apk/res/android"xmlns:tools="/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_marginTop="100dp" android:orientation="vertical" > <TextView android:id="@+id/text1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:gravity="center" android:text="弹出dialog" android:textSize="@dimen/activity_horizontal_margin" /> <TextView android:id="@+id/text2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="10dp" android:gravity="center" android:text="弹出自定义布局dialog" android:textSize="@dimen/activity_horizontal_margin" /> </LinearLayout>
update_manage_dialog布局
<RelativeLayout xmlns:android="/apk/res/android"xmlns:tools="/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#00FFFFFF" > <RelativeLayout android:layout_width="250dp" android:layout_height="250dp" android:layout_centerInParent="true" android:background="@drawable/update_bg" > <TextView android:id="@+id/dialog_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="30dp" android:gravity="center" android:text="温馨提示" android:textSize="18sp" /> <TextView android:id="@+id/dialog_content" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/dialog_title" android:layout_marginTop="10dp" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:text="原理是基本\n实践出真知" android:textSize="14sp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:orientation="horizontal" > <Button android:id="@+id/dialog_btn_cancel" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:background="@null" android:text="取消" android:textColor="#AAAAAA" android:textSize="14sp" /> <Button android:id="@+id/dialog_btn_sure" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:background="@null" android:text="立即更新" android:textSize="14sp" /> </LinearLayout> </RelativeLayout> </RelativeLayout>
update_bg放在drawable里面，代码如下
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="/apk/res/android" > <!-- android:radius 弧形的半径 --> <corners android:radius="30dp" /> <!-- 填充的颜色 --> <solid android:color="@android:color/white" /> </shape>
