[Android]_ch10.5_調用相機拍照功能

[Android]_ch10.5_調用相機拍照功能



package com.gjun.ch26_takephoto;



import java.util.List;



import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.graphics.Bitmap;

import android.os.Bundle;

import android.provider.MediaStore;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.Toast;





public class MainActivity extends Activity {

TextView tv;

ImageView iv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        tv=(TextView)findViewById(R.id.textView1);

        iv=(ImageView)findViewById(R.id.imageView1);

    }





    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

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

        return true;

    }



    @Override

    public boolean onOptionsItemSelected(MenuItem item) {

    switch(item.getItemId()){

    case R.id.item1:

    if(isIntentAvailable(MainActivity.this, MediaStore.ACTION_IMAGE_CAPTURE)){

    Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    startActivityForResult(intent, 100);

    }else{

    Toast.makeText(MainActivity.this,"找不到內建應用程式" , Toast.LENGTH_SHORT).show();

    }

    break;

    case R.id.item2:

    finish();

    break;

    }

     

        return super.onOptionsItemSelected(item);

    }

   

    public boolean isIntentAvailable(Context context,String action){

    PackageManager pm=context.getPackageManager();

    Intent intent=new Intent(action);

    List<ResolveInfo> list=pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);

    if(list.size()>0)

    return true;

    else

    return false;

    }





@Override

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {

// TODO Auto-generated method stub

super.onActivityResult(requestCode, resultCode, intent);

if(resultCode==RESULT_OK){

switch(requestCode){

case 100:

Bundle bundle=intent.getExtras();

Bitmap bitmap=(Bitmap)bundle.get("data");

iv.setImageBitmap(bitmap);

break;

}

}

}



}