Android常用代码-读取联系人

Android常用代码
  1. 1. AndroidManifest.xml添加权限
  2. 2. 申请动态权限，并读取数据

AndroidManifest.xml添加权限

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

申请动态权限，并读取数据

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private void loadAddressBook() {
    AndPermission.with(this)
        .runtime()
        .permission(Permission.READ_CONTACTS)
        .rationale((context, data, executor) -> showConfirmDialog(getString(R.string.get_contacts), getString(R.string.contact_rationale), null, null, false, new TwoBtnTextDialog.OnTwoBtnTextClick() {
            @Override
            public void onLeftClick(TextView v) {
                executor.cancel();
            }
            
            @Override
            public void onRightClick(TextView v) {
                executor.execute();
            }
        }))
        .onDenied(data -> {
            if (AndPermission.hasAlwaysDeniedPermission(AddressBookActivity.this, data)) {
                // 这里使用一个Dialog展示没有这些权限应用程序无法继续运行，询问用户是否去设置中授权。
                final Setting setting = AndPermission.with(AddressBookActivity.this).runtime().setting();
                setting.onComeback(() -> {
                    if (AndPermission.hasPermissions(AddressBookActivity.this, Permission.READ_CONTACTS)) {
                        readContacts();
                    }
                });
                
                showConfirmDialog(getString(R.string.permission_set),
                    getString(R.string.set_read_phone_permission),
                    null, null, false,
                    new TwoBtnTextDialog.OnTwoBtnTextClick() {
                        @Override
                        public void onLeftClick(TextView v) {
                        }
                        
                        @Override
                        public void onRightClick(TextView v) {
                            setting.start();
                        }
                    });
            }
        })
        .onGranted(data -> readContacts())
        .start();
}
/**
 * 读取联系人
 */
private void readContacts() {
    mBooks = new ArrayList<>();
    Cursor cursor = null;
    try {
        //cursor指针 query询问 contract协议 kinds种类
        cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null);
        if (cursor != null) {
            while (cursor.moveToNext()) {
                String displayName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
                String number = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
                if (number != null) {
                    number = number.replace(" ", "");
                }
                mBooks.add(new AddressBookEntity(displayName, number));
            }
            Log.e("TTT", "books="+ mBooks.toString());
            //notify公布
            mAdapter.setData(mBooks);
            mSidebar.setShowString(CollectionUtil.listToString(mAdapter.getLetters()));
            mSidebar.setTextSize(ScreenAdapterUtil.getInstance().getScaledValue(36));
            mLlNoData.setVisibility(CollectionUtil.isEmpty(mBooks) ? View.VISIBLE : View.GONE);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
}
Android
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