[Android]_ch4.2_ContextMenu元件介紹

[Android]_ch4.2_ContextMenu元件介紹

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[Android]_ch4.2_ContextMenu元件介紹

@Override

public void onCreateContextMenu(ContextMenu menu, View v,

ContextMenuInfo menuInfo) {

getMenuInflater().inflate(R.menu.context_menu, menu);

super.onCreateContextMenu(menu, v, menuInfo);

}

@Override

public boolean onContextItemSelected(MenuItem item) {

StringBuilder sb=new StringBuilder("選擇:");

switch(item.getItemId()){

case R.id.item10:

sb.append(getString(R.string.s10));

break;

case R.id.item11:

sb.append(getString(R.string.s11));

break;

case R.id.item12:

sb.append(getString(R.string.s12));

break;

case R.id.item13:

sb.append(getString(R.string.s13));

break;

case R.id.item14:

sb.append(getString(R.string.s14));

break;

}

Toast.makeText(MainActivity.this, sb, Toast.LENGTH_SHORT).show();

return super.onContextItemSelected(item);

}

[Android]_ch3.7_ScrollView元件介紹1

[Android]_ch3.7_ScrollView元件介紹1

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[Android]_ch3.7_ScrollView元件介紹1

package com.derek.ch9_scrollview;



import android.R.integer;

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.EditText;

import android.widget.LinearLayout;





public class MainActivity extends Activity {

LinearLayout layout;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        layout=(LinearLayout)findViewById(R.id.LinearLayout2);

        for(int i=1;i<=10;i++){

        LinearLayout.LayoutParams btnParams=new LinearLayout.LayoutParams(200, 100);

        LinearLayout.LayoutParams etParams=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);

        LinearLayout.LayoutParams cbParams=new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

        Button btn=new Button(MainActivity.this);

        btn.setText("按鈕"+i);

        btn.setTextColor(Color.BLUE);

        btn.setTextSize(20);

        EditText et=new EditText(MainActivity.this);

        et.setHint("輸入方塊"+i);

        CheckBox cb=new CheckBox(MainActivity.this);

        cb.setText("選項"+i);

        layout.addView(btn, btnParams);

        layout.addView(et, etParams);

        layout.addView(cb, cbParams);

        }

    }

}