我是Android开发的新手,我在设计方面遇到了麻烦。我正在尝试制作短信应用。我成功访问了收件箱并显示了联系人姓名。现在我想在每个listview-item
上设置一个自定义高度,并删除看起来像底部边框的分隔线高度。
android:minHeight
在我的案例中似乎不起作用。我还想在每个动态创建的listview-item
上添加click事件,但它似乎不起作用。
这是我的代码:
MainActivity.java
public class MainActivity extends ListActivity {
ArrayList<String> messages = new ArrayList<String>();
ArrayAdapter<String> adapter;
ArrayList<String> msglist = new ArrayList<String>();
String num;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ListView lvmsgs = (ListView) findViewById(R.id.msglist);
Uri uriSMSURI = Uri.parse("content://sms/inbox");
Cursor cur = getContentResolver().query(uriSMSURI, null, null, null, null);
String sms = null;
ContentResolver resolver = null;
while (cur.moveToNext()) {
sms += "From :" + cur.getString(2) + " : " + cur.getString(cur.getColumnIndexOrThrow("body")) + "\n";
num = cur.getString(2);
num = num.replace("+639", "09");
if (msglist.contains(num)) {
} else {
msglist.add(num);
messages.add(getContactName(num).toString());
}
}
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, messages);
setListAdapter(adapter);
lvmsgs.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), "Toast",
Toast.LENGTH_LONG).show();
}
});
}
private String getContactName(String number) {
String name = null;
String[] projection = new String[]{ContactsContract.PhoneLookup.DISPLAY_NAME};
Uri contactUri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
Cursor cursor = getContentResolver().query(contactUri, projection, null, null, null);
if (cursor.moveToFirst()) {
name = cursor.getString(cursor.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME));
} else {
return number;
}
return name;
}
}
activity_main.xml中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ffffff"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<ListView
android:id="@+id/msglist"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:descendantFocusability="blocksDescendants"
android:focusable="false"
android:focusableInTouchMode="false" />
</RelativeLayout>
答案 0 :(得分:0)
我认为您可以将自己的布局传递给arrayadapter。只创建一个没有任何布局的文本视图的布局。并将高度和填充设置为文本视图。
答案 1 :(得分:0)
Self
}
MainActivity: package com.example.evuser.customlistviewdemo;
activity_main:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<ListView
android:id="@+id/lvCustomList"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
layout_list_item.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:orientation="horizontal"
android:padding="10dp">
<ImageView
android:id="@+id/ivIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/start1" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/tvTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Title" />
<TextView
android:id="@+id/tvDesc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Description" />
</LinearLayout>
</LinearLayout>
ModelClass:
package com.example.evuser.customlistviewdemo;
public class ListData {
String Description;
String title;
int imgResId;
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public int getImgResId() {
return imgResId;
}
public void setImgResId(int imgResId) {
this.imgResId = imgResId;
}
}
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.widget.ListView;
import java.util.ArrayList;
public class MainActivity extends Activity {
ListView lvDetail;
Context context = MainActivity.this;
ArrayList<ListData> myList = new ArrayList<ListData>();
String[] title = new String[]{
"Title 1", "Title 2", "Title 3", "Title 4",
"Title 5", "Title 6", "Title 7", "Title 8"
};
String[] desc = new String[]{
"Desc 1", "Desc 2", "Desc 3", "Desc 4",
"Desc 5", "Desc 6", "Desc 7", "Desc 8"
};
int[] img = new int[]{
R.drawable.start1, R.drawable.star2, R.drawable.star3, R.drawable.star4,
R.drawable.star5, R.drawable.star4, R.drawable.star7, R.drawable.star8
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lvDetail = (ListView) findViewById(R.id.lvCustomList);
// insert data into the list before setting the adapter
// otherwise it will generate NullPointerException - Obviously
getDataInList();
lvDetail.setAdapter(new MyBaseAdapter(context, myList));
}
private void getDataInList() {
for (int i = 0; i < title.length; i++) {
// Create a new object for each list item
ListData ld = new ListData();
ld.setTitle(title[i]);
ld.setDescription(desc[i]);
ld.setImgResId(img[i]);
// Add this object into the ArrayList myList
myList.add(ld);
}
}
import java.util.ArrayList;
AdapterClass:
package com.example.evuser.customlistviewdemo;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
}
public class MyBaseAdapter extends BaseAdapter {
ArrayList<ListData> myList = new ArrayList<ListData>();
LayoutInflater inflater;
Context context;
public MyBaseAdapter(Context context, ArrayList<ListData> myList) {
this.myList = myList;
this.context = context;
inflater = LayoutInflater.from(this.context);
}
@Override
public int getCount() {
return myList.size();
}
@Override
public ListData getItem(int position) {
return myList.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
MyViewHolder mViewHolder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.layout_list_item, parent, false);
mViewHolder = new MyViewHolder(convertView);
convertView.setTag(mViewHolder);
} else {
mViewHolder = (MyViewHolder) convertView.getTag();
}
ListData currentListData = getItem(position);
mViewHolder.tvTitle.setText(currentListData.getTitle());
mViewHolder.tvDesc.setText(currentListData.getDescription());
mViewHolder.ivIcon.setImageResource(currentListData.getImgResId());
return convertView;
}
private class MyViewHolder {
TextView tvTitle, tvDesc;
ImageView ivIcon;
public MyViewHolder(View item) {
tvTitle = (TextView) item.findViewById(R.id.tvTitle);
tvDesc = (TextView) item.findViewById(R.id.tvDesc);
ivIcon = (ImageView) item.findViewById(R.id.ivIcon);
}
}