Android学习教程之动态GridView控件使用（6）_安卓软件开发教程-查字典教程网

摘要：本文实例为大家分享了Android动态GridView控件使用的具体代码，供大家参考，具体内容如下MainActivity.java代码:p...

本文实例为大家分享了Android动态GridView控件使用的具体代码，供大家参考，具体内容如下

MainActivity.java代码:

package siso.haha; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { private Button btnStaggeredGridView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btnStaggeredGridView=(Button)findViewById(R.id.btnStaggeredGridView); btnStaggeredGridView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(); intent.setClass(MainActivity.this,staggeredgridviewActivity.class); //直接启动一个Activity startActivity(intent); } }); } }

staggeredgridviewActivity.java代码:

package siso.haha; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import java.util.Random; import viewHelper.StaggeredGridView; import viewHelper.StaggeredGridView.LayoutParams; public class staggeredgridviewActivity extends Activity { private final static String TAG = staggeredgridviewActivity.class.getSimpleName(); private StaggeredGridView mSGV; private SGVAdapter mAdapter; private StaggeredGridView.OnScrollListener mScrollListener = new StaggeredGridView.OnScrollListener() { @Override public void onScrollStateChanged(ViewGroup view, int scrollState) { Log.d(TAG, "[onScrollStateChanged] scrollState:" + scrollState); switch (scrollState) { case SCROLL_STATE_IDLE: setTitle("SCROLL_STATE_IDLE"); break; case SCROLL_STATE_FLING: setTitle("SCROLL_STATE_FLING"); break; case SCROLL_STATE_TOUCH_SCROLL: setTitle("SCROLL_STATE_TOUCH_SCROLL"); break; default: break; } } @Override public void onScroll(ViewGroup view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { Log.d(TAG, "[onScroll] firstVisibleItem:" + firstVisibleItem + " visibleItemCount:"+visibleItemCount + " totalItemCount:" + totalItemCount); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_staggeredgridview); mAdapter = new SGVAdapter(this); mSGV = (StaggeredGridView) findViewById(R.id.grid); mSGV.setColumnCount(4); mSGV.setAdapter(mAdapter); mSGV.setOnScrollListener(mScrollListener); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. // getMenuInflater().inflate(R.menu.activity_main, menu); return true; } private final class SGVAdapter extends BaseAdapter { LayoutInflater mInflater; public SGVAdapter(Context ctx) { mInflater = LayoutInflater.from(ctx); } @Override public int getCount() { return 30; } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return 0; } Random r = new Random(); @Override public View getView(int position, View convertView, ViewGroup parent) { //LayoutParams相当于一个Layout的信息包，它封装了Layout的位置、高、宽等信息。假设在屏幕上一块区域是由一个Layout占领的，如果将一个View添加到一个Layout中，最好告诉Layout用户期望的布局方式，也就是将一个认可的layoutParams传递进去。 /*可以这样去形容LayoutParams，在象棋的棋盘上，每个棋子都占据一个位置，也就是每个棋子都有一个位置的信息，如这个棋子在4行4列，这里的“4行4列”就是棋子的LayoutParams。但LayoutParams类也只是简单的描述了宽高，宽和高都可以设置成三种值： 1，一个确定的值； 2，FILL_PARENT，即填满（和父容器一样大小）； 3，WRAP_CONTENT，即包裹住组件就好。*/ final LayoutParams lp; final View v; switch (position) { case 0: case 29: v = mInflater.inflate(R.layout.element_header, parent, false); lp = new LayoutParams(v.getLayoutParams()); lp.span = mSGV.getColumnCount(); break; case 8: case 9: case 18: case 19: v = mInflater.inflate(R.layout.element_item_small, parent, false); lp = new LayoutParams(v.getLayoutParams()); lp.span = 1; break; case 10: case 20: v = mInflater.inflate(R.layout.element_item_large, parent, false); lp = new LayoutParams(v.getLayoutParams()); lp.span = 4; break; default: v = mInflater.inflate(R.layout.element_item, parent, false); lp = new LayoutParams(v.getLayoutParams()); lp.span = 2; break; } v.setLayoutParams(lp); return v; } } }

activity_main.xml内容:

<"1.0" encoding="utf-8"?> <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:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context="siso.haha.MainActivity"> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="动态GridView" android:id="@+id/btnStaggeredGridView" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button2" android:layout_below="@+id/btnStaggeredGridView" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button3" android:layout_below="@+id/button2" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button4" android:layout_below="@+id/button3" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button5" android:layout_below="@+id/button4" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button6" android:layout_below="@+id/button5" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button7" android:layout_below="@+id/button6" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button8" android:layout_below="@+id/button7" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button9" android:layout_below="@+id/button8" android:layout_centerHorizontal="true" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:text="New Button" android:id="@+id/button10" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true" /> </RelativeLayout>

activity_staggeredgridview.xml内容:

其他：

element_header.xml

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="56dp" android:background="@drawable/bg_white_box" android:gravity="center_vertical" android:orientation="horizontal" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:text="做一点事..." /> <ProgressBar android:id="@+id/progressBar1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" /> </LinearLayout>

element_item.xml：

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/bg_white_box" android:orientation="vertical" android:padding="2dp" > <ImageView android:id="@+id/imageView1" android:layout_width="match_parent" android:layout_height="100dp" android:src="@android:color/holo_green_light" /> <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="56dp" android:layout_margin="8dp" android:drawableRight="@android:drawable/ic_menu_info_details" android:gravity="center_vertical" android:lines="2" android:text="列表项文本在这里，图像上面" android:textAppearance="?android:attr/textAppearance" /> </LinearLayout>

element_item_large.xml

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/bg_white_box" android:orientation="vertical" android:padding="2dp" > <ImageView android:id="@+id/imageView1" android:layout_width="match_parent" android:layout_height="160dp" android:src="@android:color/holo_orange_light" /> <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="8dp" android:drawableRight="@android:drawable/ic_menu_info_details" android:gravity="center_vertical" android:lines="2" android:text="列表项文本在这里，图像上面" android:textAppearance="?android:attr/textAppearance" /> </LinearLayout>

element_item_small.xml

<"1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/bg_white_box" android:orientation="vertical" android:padding="2dp" > <ImageView android:id="@+id/imageView1" android:layout_width="match_parent" android:layout_height="100dp" android:src="@android:color/holo_red_light" /> <TextView android:id="@+id/textView1" android:layout_width="match_parent" android:layout_height="56dp" android:layout_margin="8dp" android:drawableRight="@android:drawable/ic_menu_info_details" android:gravity="center_vertical" android:lines="2" android:text="列表项文本在这里，图像上面" android:textAppearance="?android:attr/textAppearance" /> </LinearLayout>

bg_white_box.xml

<"1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" > <solid android:color="@android:drawable/screen_background_light" /> <stroke android:width="1dp" android:color="@android:color/holo_blue_dark" /> </shape>

运行结果如图:

Android学习教程之动态GridView控件使用（6）1

Android学习教程之动态GridView控件使用（6）2

Android学习教程之动态GridView控件使用（6）3

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持查字典教程网。