【实验】电话拨号、动态添加按钮

来源：互联网发布：淘宝举报卖家编辑：程序博客网时间：2024/05/21 20:26

MainActivity2:

package com.example.lab2;import android.net.Uri;import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.content.Intent;import android.view.Gravity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnLongClickListener;import android.view.ViewGroup;import android.widget.Button;import android.widget.EditText;import android.widget.GridLayout;import android.widget.GridLayout.LayoutParams;import android.widget.GridView;import android.widget.ImageButton;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast;public class MainActivity2 extends Activity {Context context;GridLayout gl;Button btn;String temp;TextView tv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);                init(); //初始化       int count=1;    final Button[] btn = new Button[30];      for(int i=0;i<5;i++)        for(int j=0;j<3;j++) {            System.out.println("count:"+count);            btn[i*3 + j] = new Button(this);            btn[i*3 + j].setWidth(100);                                          switch(i*3 + j)          {          case 9:btn[i*3 + j].setText("*");                       break;          case 10:btn[i*3 + j].setText("0");                       break;          case 11:btn[i*3 + j].setText("#");                    break;          case 12:btn[i*3 + j].setText("清除");          break;          case 13:btn[i*3 + j].setText("拨打");           break;          case 14:btn[i*3 + j].setText("返回");             break;          default:btn[i*3 + j].setText(String.valueOf(count));                      break;          }                count++;            GridLayout.Spec rowSpec = GridLayout.spec(i);     //设置它的行和列            GridLayout.Spec columnSpec=GridLayout.spec(j);            GridLayout.LayoutParams params=new GridLayout.LayoutParams(rowSpec,columnSpec);            params.setGravity(Gravity.LEFT);            gl.addView(btn[i*3 + j],params);                    final int number = i*3+j;          OnClickListener listener = new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubString num="";switch(number){case 9:num = "*";  temp = tv.getText().toString();            tv.setText(temp + num);            break;case 10: num = "0";                  temp = tv.getText().toString();             tv.setText(temp + num);             break;case 11: num = "#";                  temp = tv.getText().toString();             tv.setText(temp + num);             break;case 12:tv.setText("");break;case 13:  String PhoneNumber = tv.getText().toString();                  Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:" + PhoneNumber));                  startActivity(intent);    break;case 14: int len = tv.getText().toString().length();                 String substr = tv.getText().toString().substring(0, len-1);                 tv.setText(substr);                 break;                default:                num = String.valueOf(number+1);                temp = tv.getText().toString();        tv.setText(temp + num);        break;}                //Toast.makeText(MainActivity2.this, "num", Toast.LENGTH_SHORT);}  };  btn[number].setOnClickListener(listener);            }      }        public void init()    {    gl = (GridLayout)findViewById(R.id.gl);    context = MainActivity2.this;       tv = (TextView)findViewById(R.id.tv);    }    }

xml:

<LinearLayout 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:orientation="vertical"  >     <TextView         android:id="@+id/tv"        android:maxLines="2"        android:textSize="20dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>            <GridLayout         android:id="@+id/gl"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:columnCount="3"        android:rowCount="5"        ></GridLayout> </LinearLayout>

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