[Android] Intent用法

● 呼叫電話(call a dial screen)
這裡要注意的是,"tel:"是必要的,不然會有錯誤

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("tel:1234567890"));
        startActivity(intent);

● 直接撥打電話(make a phone call)
如果不想要顯示撥號畫面,想直接撥打電話,則需要使用ACTION_CALL

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_CALL);
        intent.setData(Uri.parse("tel:0123456789"));
        startActivity(intent);

因為有使用到ACTION_CALL,所以要在manifest加入權限

<uses-permission android:name="android.permission.CALL_PHONE" />

● 呼叫瀏覽器(Browser)

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("http://www.acer.com"));
        startActivity(intent);

加入搜尋字串

        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_WEB_SEARCH);
        // 設定搜尋的字串
        intent.putExtra(SearchManager.QUERY, "acer");
        startActivity(intent);

● 呼叫相機(Camera)

        Intent intent = new Intent();
        intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, 1);

取得拍攝後的照片

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

        if (resultCode != RESULT_OK) {
            // 無法得到正確結果時會跑到這裡
            return;
        }

        if (requestCode == 1) {
            // 這個bitmap是拍攝之照片的資料
            Bitmap bitmap = (Bitmap) data.getExtras().get("data");
            // 在LAYOUT拉一個ImageView,來顯示照片
            ImageView imageView = (ImageView) findViewById(R.id.image);
            imageView.setImageBitmap(bitmap);

        }
}

● 呼叫錄音機(Recorder)

        Intent intent = new Intent();
        intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
        startActivity(intent);

● 呼叫Market應用程式(call market application)

       Intent intent = new Intent(Intent.ACTION_VIEW);
       intent.setData(Uri.parse("market://details?id=comq.android.autoRedial"));
       startActivity(intent);

● 顯示聯絡人清單

    Intent intent  = new Intent(Intent.ACTION_VIEW, People.CONTENT_URI);  
    startActivity(intent );  

顯示第3筆聯絡人的詳細資料

Uri uriContact = ContentUris.withAppendedId(People.CONTENT_URI, 3); //3 是聯絡人ID  
Intent intent   = new Intent(Intent.ACTION_VIEW, uriContact );  
startActivity(intent   );

● 顯示地圖

Uri uri = Uri.parse("geo:25.718058,-100.279487");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
//其他geo的用法 
//geo:latitude,longitude <--上面例子是這個
//geo:latitude,longitude?z=zoom    
//geo:0,0?q=business+near+city  
//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom 
//geo:0,0?q=my+street+address 

路徑規劃

Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en"); 
Intent intent  = new Intent(Intent.ACTION_VIEW, uri); 
startActivity(intent ); 

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