從函式回傳陣列

使用靜態陣列 static array

#include

 

float *fun(void)

{

    int i;

    static float fArray[10];

    for( i = 0; i < 10; i++ )

        fArray[i] = i + i / 2.0f;

   

    return fArray;

}

 

int main(void)

{

    int i;

    float *fPtr;

   

    fPtr = fun();

   

    for( i = 0; i < 10; i++ )

        printf( "%f\t", fPtr[i] );

   

    printf("\n");

    return 0;

}

 

使用結構

#include

 

struct fArray

{

    float data[10];

};

 

struct fArray fun(void)

{

    int i;

    struct fArray tempArray;

    for( i = 0; i < 10; i++ )

        tempArray.data[i] = i + i / 2.0f;

   

    return tempArray;

}

 

int main(void)

{

   int i;

    struct fArray data;

   

    data = fun();

       

    for( i = 0; i < 10; i++ )

        printf( "%f\t", data.data[i] );

   

    printf("\n");

    return 0;

}

 

使用動態記憶體

#include

#include

 

float *fun(void)

{

    int i;

    float *tempArray;

   

    tempArray = malloc(sizeof(float)* 10);

    if( tempArray == NULL )

        exit(1);

   

    for( i = 0; i < 10; i++ )

        tempArray[i] = i + i / 2.0f;

   

    return tempArray;

}

 

int main(void)

{

    int i;

    float *data;

   

    data = fun();

       

    for( i = 0; i < 10; i++ )

        printf( "%f\t", data[i] );

   

    printf("\n");

   

    free(data);

    return 0;

}

 

使用傳址呼叫

#include

#include

 

void fun(float tempArray[])

{

    int i;

   

    for( i = 0; i < 10; i++ )

        tempArray[i] = i + i / 2.0f;

}

 

int main(void)

{

    int i;

    float data[10];

   

    fun(data);

       

    for( i = 0; i < 10; i++ )

        printf( "%f\t", data[i] );

   

    printf("\n");

   

    free(data);

    return 0;

}

各種Android Toast設計範例

1.預設效果

Toast.makeText(getApplicationContext(), "默认Toast样式",
     Toast.LENGTH_SHORT).show();

2.自型定義顯示位置效果

toast = Toast.makeText(getApplicationContext(),
     "自定义位置Toast", Toast.LENGTH_LONG);
   toast.setGravity(Gravity.CENTER, 0, 0);
   toast.show();

3.嵌入圖片效果

toast = Toast.makeText(getApplicationContext(),
     "带图片的Toast", Toast.LENGTH_LONG);
   toast.setGravity(Gravity.CENTER, 0, 0);
   LinearLayout toastView = (LinearLayout) toast.getView();
   ImageView imageCodeProject = new ImageView(getApplicationContext());
   imageCodeProject.setImageResource(R.drawable.icon);
   toastView.addView(imageCodeProject, 0);
   toast.show();

4.完全自行定義效果

LayoutInflater inflater = getLayoutInflater();

   View layout = inflater.inflate(R.layout.custom,
     (ViewGroup) findViewById(R.id.llToast));
   ImageView image = (ImageView) layout
     .findViewById(R.id.tvImageToast);
   image.setImageResource(R.drawable.icon);
   TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);
   title.setText("Attention");
   TextView text = (TextView) layout.findViewById(R.id.tvTextToast);
   text.setText("完全自定义Toast");
   toast = new Toast(getApplicationContext());
   toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
   toast.setDuration(Toast.LENGTH_LONG);
   toast.setView(layout);
   toast.show();

5.來自其他thread

new Thread(new Runnable() {
    public void run() {
     showToast();
    }
   }).start();

full code

1.Main.java

package com.wjq.toast;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class Main extends Activity implements OnClickListener {
 Handler handler = new Handler();

 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  findViewById(R.id.btnSimpleToast).setOnClickListener(this);
  findViewById(R.id.btnSimpleToastWithCustomPosition).setOnClickListener(
    this);
  findViewById(R.id.btnSimpleToastWithImage).setOnClickListener(this);
  findViewById(R.id.btnCustomToast).setOnClickListener(this);
  findViewById(R.id.btnRunToastFromOtherThread).setOnClickListener(this);

 }

 public void showToast() {
  handler.post(new Runnable() {

   @Override
   public void run() {
    Toast.makeText(getApplicationContext(), "我来自其他线程！",
      Toast.LENGTH_SHORT).show();

   }
  });
 }

 @Override
 public void onClick(View v) {
  Toast toast = null;
  switch (v.getId()) {
  case R.id.btnSimpleToast:
   Toast.makeText(getApplicationContext(), "默认Toast样式",
     Toast.LENGTH_SHORT).show();
   break;
  case R.id.btnSimpleToastWithCustomPosition:
   toast = Toast.makeText(getApplicationContext(),
     "自定义位置Toast", Toast.LENGTH_LONG);
   toast.setGravity(Gravity.CENTER, 0, 0);
   toast.show();
   break;
  case R.id.btnSimpleToastWithImage:
   toast = Toast.makeText(getApplicationContext(),
     "带图片的Toast", Toast.LENGTH_LONG);
   toast.setGravity(Gravity.CENTER, 0, 0);
   LinearLayout toastView = (LinearLayout) toast.getView();
   ImageView imageCodeProject = new ImageView(getApplicationContext());
   imageCodeProject.setImageResource(R.drawable.icon);
   toastView.addView(imageCodeProject, 0);
   toast.show();
   break;
  case R.id.btnCustomToast:
   LayoutInflater inflater = getLayoutInflater();
   View layout = inflater.inflate(R.layout.custom,
     (ViewGroup) findViewById(R.id.llToast));
   ImageView image = (ImageView) layout
     .findViewById(R.id.tvImageToast);
   image.setImageResource(R.drawable.icon);
   TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);
   title.setText("Attention");
   TextView text = (TextView) layout.findViewById(R.id.tvTextToast);
   text.setText("完全自定义Toast");
   toast = new Toast(getApplicationContext());
   toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
   toast.setDuration(Toast.LENGTH_LONG);
   toast.setView(layout);
   toast.show();
   break;
  case R.id.btnRunToastFromOtherThread:
   new Thread(new Runnable() {
    public void run() {
     showToast();
    }
   }).start();
   break;

  }

 }
}

2.Main.xml

xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical" android:layout_width="fill_parent"
 android:layout_height="fill_parent" android:padding="5dip" android:gravity="center">
 <Button android:layout_height="wrap_content"
  android:layout_width="fill_parent" android:id="@+id/btnSimpleToast"
  android:text="  认"></Button>
 <Button android:layout_height="wrap_content"
  android:layout_width="fill_parent" android:text="自定义  示位置"
  android:id="@+id/btnSimpleToastWithCustomPosition"></Button>
 <Button android:layout_height="wrap_content"
  android:layout_width="fill_parent" android:id="@+id/btnSimpleToastWithImage"
  android:text="带图片"></Button>
 <Button android:layout_height="wrap_content"
  android:layout_width="fill_parent" android:text="完全自定义"
  android:id="@+id/btnCustomToast"></Button>
 <Button android:layout_height="wrap_content"
  android:layout_width="fill_parent" android:text="其他线程"
  android:id="@+id/btnRunToastFromOtherThread"></Button>

</LinearLayout>

3.custom.xml