动态分割手机屏幕

柔光的暖阳◎ 2022-07-17 02:27 205阅读 0赞

xml文件：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:background="@drawable/white"
      android:orientation="vertical"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
    >
    
        <GridView
            android:id="@+id/myGridView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:numColumns="5" >
        </GridView>
    
      <TextView
        android:id="@+id/myTextView1"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="@string/hello"
        android:textColor="@drawable/blue"
      />
      <LinearLayout
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
      >
      <Button
        android:id="@+id/myButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_button1" />
      <Button
        android:id="@+id/myButton2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/str_button2" />
      </LinearLayout>
    </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
    <TextView
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/myCheckedTextView1"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:textColor="@drawable/blue"
      android:textSize="12sp"
      android:textAppearance="?android:attr/textAppearanceLarge"
      android:gravity="center_vertical"
      android:paddingLeft="6dip"
      android:minHeight="?android:attr/listPreferredItemHeight"
    />

java文件：

package dfzy.EX032;
    
    import dfzy.EX032.R;
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.GridView;
    import android.widget.TextView;
    
    public class EX032 extends Activity
    {
      private TextView mTextView01;
      private Button mButton01,mButton02;
      private GridView mGridView01;
      private String[] mGames1,mGames2;
      private ArrayAdapter<String> aryAdapter1;
      
      /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState)
      {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        /* 4个字符串数组 */
        mGames1 = new String[]
                      {
                        getResources().getString(R.string.str_list1),
                        getResources().getString(R.string.str_list2),
                        getResources().getString(R.string.str_list3),
                        getResources().getString(R.string.str_list4)
                      };
        
        /* 9个字符串数组 */
        mGames2 = new String[]
                      {
                        getResources().getString(R.string.str_list1),
                        getResources().getString(R.string.str_list2),
                        getResources().getString(R.string.str_list3),
                        getResources().getString(R.string.str_list4),
                        getResources().getString(R.string.str_list1),
                        getResources().getString(R.string.str_list2),
                        getResources().getString(R.string.str_list3),
                        getResources().getString(R.string.str_list4),
                        getResources().getString(R.string.str_list1)
                      };
        
        mButton01 = (Button)findViewById(R.id.myButton1);
        mButton02 = (Button)findViewById(R.id.myButton2);
        mGridView01 = (GridView)findViewById(R.id.myGridView1);
        
        mTextView01 = (TextView)findViewById(R.id.myTextView1);
        
        mButton01.setOnClickListener(new Button.OnClickListener()
        {
          @Override
          public void onClick(View v)
          {
            // TODO Auto-generated method stub
            
            /* 4个元素，以2列方式呈现(2x2) */
            mGridView01.setNumColumns(2);
            
            aryAdapter1 = new ArrayAdapter<String>
            (EX032.this, R.layout.simple, mGames1);
            
            mGridView01.setAdapter(aryAdapter1);
            //mGridView01.setScrollBarStyle(DEFAULT_KEYS_DIALER);
            mGridView01.setSelection(2);
            mGridView01.refreshDrawableState();
          }
        });
        
        mButton02.setOnClickListener(new Button.OnClickListener()
        {
          @Override
          public void onClick(View v)
          {
            // TODO Auto-generated method stub
            
            /* 9个元素，以3列方式呈现(3x3) */
            mGridView01.setNumColumns(3);
            
            aryAdapter1 = new ArrayAdapter<String>
            (EX032.this, R.layout.simple, mGames2);
            
            mGridView01.setAdapter(aryAdapter1);
          }
        });
        
        mGridView01.setOnItemClickListener
                   (new GridView.OnItemClickListener()
        {
          @Override
          public void onItemClick(AdapterView<?> parent, 
                                  View v, int position, long arg3)
          {
            // TODO Auto-generated method stub
            
            /* 判断Adapter里的元素个数，判断被点击的是第几个元素名称 */
            switch(aryAdapter1.getCount())
            {
              case 4:
                /* position为GridView里的元素索引值 */
                mTextView01.setText(mGames1[position]);
                break;
              case 9:
                mTextView01.setText(mGames2[position]);
                break;
            }
          }
        });
      }
    }